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Multilingual Wikipedia
In June 2020 the website worldcat.org was on the 68th place in the ranking of the most reliable and popular sources in multilingual Wikipedia from readers' point of view (PR-score). If we consider only frequency of appearance of this source in references of Wikipedia articles (F-score), this website was on the 83rd place in June 2020. From Wikipedians' point of view, "worldcat.org" is the 79th most reliable source in different language versions of Wikipedia (AR-score).
The website is placed before bloomberg.com and after lemonde.fr in multilingual PR ranking of the most reliable sources in Wikipedia.
PR-score:

68
th place
362,409,394
-60,281,288
AR-score:

79
th place
46,688,909
+2,511,235
F-score:

83
rd place
169,394
+8,730
Spanish Wikipedia (es)
PR-score:

15
th place
95,867,953
-25,621,795
AR-score:

35
th place
6,647,687
+257,159
English Wikipedia (en)
PR-score:

276
th place
74,379,712
+13,965,043
AR-score:

184
th place
9,668,393
+1,206,180
F-score:

112
th place
31,323
+2,899
French Wikipedia (fr)
AR-score:

27
th place
8,650,567
+185,484
F-score:

25
th place
25,524
+1,122
Portuguese Wikipedia (pt)
PR-score:

28
th place
24,311,103
-1,113,090
AR-score:

73
rd place
1,891,301
+102,163
F-score:

50
th place
7,668
+429
Italian Wikipedia (it)
PR-score:

35
th place
21,374,238
-12,603,301
AR-score:

60
th place
2,873,338
+73,808
Russian Wikipedia (ru)
PR-score:

132
nd place
15,284,813
-5,292,345
AR-score:

178
th place
1,130,335
+23,120
F-score:

156
th place
4,601
+248
Chinese Wikipedia (zh)
PR-score:

112
th place
12,286,426
-1,004,951
AR-score:

156
th place
652,105
+13,554
F-score:

105
th place
3,544
+110
Japanese Wikipedia (ja)
PR-score:

232
nd place
9,830,067
+149,035
AR-score:

315
th place
584,201
+42,236
F-score:

250
th place
2,438
+125
Swedish Wikipedia (sv)
PR-score:

30
th place
5,069,917
-3,462,062
AR-score:

48
th place
1,724,077
+66,968
F-score:

71
st place
4,169
+206
German Wikipedia (de)
PR-score:

424
th place
4,764,474
+595,481
AR-score:

370
th place
881,916
+33,583
F-score:

247
th place
2,597
+42
Indonesian Wikipedia (id)
PR-score:

18
th place
4,627,653
+309,014
AR-score:

26
th place
633,264
+44,504
F-score:

29
th place
4,126
+253
Arabic Wikipedia (ar)
PR-score:

41
st place
4,582,795
-70,918
AR-score:

56
th place
1,342,299
+43,768
Dutch Wikipedia (nl)
PR-score:

62
nd place
4,243,532
+138,276
AR-score:

89
th place
778,341
+60,326
F-score:

51
st place
2,382
+140
Czech Wikipedia (cs)
PR-score:

50
th place
3,482,084
-596,936
AR-score:

80
th place
455,321
+40,544
F-score:

65
th place
2,251
+111
Korean Wikipedia (ko)
PR-score:

39
th place
3,395,287
+3,301
AR-score:

99
th place
311,618
+25,368
F-score:

89
th place
1,100
+182
Catalan Wikipedia (ca)
PR-score:

13
th place
3,105,942
-2,473,741
F-score:

16
th place
10,501
+722
Hebrew Wikipedia (he)
PR-score:

22
nd place
2,805,021
-440,402
AR-score:

27
th place
935,860
+17,807
F-score:

32
nd place
1,852
+61
Ukrainian Wikipedia (uk)
PR-score:

80
th place
1,775,854
-2,287,935
F-score:

92
nd place
2,618
+244
Basque Wikipedia (eu)
PR-score:

4
th place
1,686,580
-2,007,634
Polish Wikipedia (pl)
PR-score:

390
th place
1,604,971
-634,967
AR-score:

462
nd place
271,737
-9,604
F-score:

329
th place
1,631
+19
Greek Wikipedia (el)
PR-score:

51
st place
1,457,945
-395,921
AR-score:

55
th place
242,139
+3,494
F-score:

30
th place
2,277
+81
Persian Wikipedia (fa)
PR-score:

106
th place
1,217,185
-134,634
AR-score:

157
th place
219,968
+864
F-score:

140
th place
827
+1
Romanian Wikipedia (ro)
PR-score:

55
th place
1,068,546
+326,713
AR-score:

230
th place
57,428
+455
F-score:

200
th place
437
+3
Bulgarian Wikipedia (bg)
PR-score:

61
st place
970,456
-228,168
AR-score:

113
th place
145,446
+735
F-score:

253
rd place
215
+1
Serbian Wikipedia (sr)
PR-score:

41
st place
891,318
-1,029,141
AR-score:

49
th place
328,768
+7,647
F-score:

28
th place
2,767
+63
Slovak Wikipedia (sk)
PR-score:

39
th place
753,287
-161,248
AR-score:

65
th place
109,225
+3,648
F-score:

60
th place
528
+39
Hungarian Wikipedia (hu)
PR-score:

180
th place
716,532
-436,791
AR-score:

149
th place
174,273
+8,953
F-score:

142
nd place
773
+33
Finnish Wikipedia (fi)
PR-score:

165
th place
653,354
-622,377
AR-score:

202
nd place
237,663
+860
F-score:

235
th place
894
+10
Simple English Wikipedia (simple)
PR-score:

51
st place
501,374
-127,319
AR-score:

109
th place
107,963
+2,447
F-score:

165
th place
253
+9
Turkish Wikipedia (tr)
PR-score:

386
th place
392,716
-120,935
AR-score:

307
th place
114,894
+798
F-score:

421
st place
279
+8
Vietnamese Wikipedia (vi)
PR-score:

379
th place
382,464
-93,026
AR-score:

483
rd place
50,229
+1,056
F-score:

302
nd place
592
+6
Norwegian Wikipedia (no)
PR-score:

126
th place
380,787
-286,678
AR-score:

140
th place
258,509
+5,715
F-score:

91
st place
1,228
+76
Hindi Wikipedia (hi)
PR-score:

42
nd place
265,379
+16,767
AR-score:

82
nd place
62,661
+4,633
F-score:

171
st place
179
+6
Bengali Wikipedia (bn)
PR-score:

32
nd place
265,142
-12,080
AR-score:

58
th place
94,674
+2,901
Croatian Wikipedia (hr)
PR-score:

180
th place
212,121
+40,245
AR-score:

186
th place
49,209
+24,874
F-score:

189
th place
240
+28
Malay Wikipedia (ms)
PR-score:

77
th place
199,465
+68,563
AR-score:

227
th place
20,066
+523
F-score:

229
th place
224
0
Slovenian Wikipedia (sl)
PR-score:

40
th place
197,981
-265,396
AR-score:

62
nd place
47,711
+291
F-score:

84
th place
306
+1
Macedonian Wikipedia (mk)
PR-score:

27
th place
188,448
-124,269
Galician Wikipedia (gl)
PR-score:

49
th place
99,576
-29,691
F-score:

52
nd place
776
+50
Punjabi Wikipedia (pa)
AR-score:

130
th place
6,026
-18
F-score:

94
th place
113
+2
Lithuanian Wikipedia (lt)
PR-score:

200
th place
73,701
-78,118
AR-score:

263
rd place
20,777
+2,781
F-score:

371
st place
45
+5
Javanese Wikipedia (jv)
Danish Wikipedia (da)
PR-score:

620
th place
70,571
-16,012
AR-score:

656
th place
22,987
+50
F-score:

505
th place
111
+1
Bosnian Wikipedia (bs)
PR-score:

98
th place
65,288
-64,549
AR-score:

178
th place
16,027
+134
F-score:

177
th place
89
0
Armenian Wikipedia (hy)
PR-score:

134
th place
65,166
-32,776
AR-score:

165
th place
40,964
+3,340
F-score:

107
th place
883
+59
Thai Wikipedia (th)
PR-score:

1,059
th place
65,073
-5,333
AR-score:

1,429
th place
8,252
+755
F-score:

609
th place
89
+10
Latvian Wikipedia (lv)
PR-score:

148
th place
55,832
-92,591
AR-score:

160
th place
30,201
+225
F-score:

168
th place
154
0
Sundanese Wikipedia (su)
PR-score:

6
th place
55,067
+24,311
AR-score:

11
th place
20,004
+334
F-score:

18
th place
270
+19
Georgian Wikipedia (ka)
PR-score:

200
th place
46,645
-22,937
AR-score:

222
nd place
13,673
+495
F-score:

251
st place
102
+3
Minangkabau Wikipedia (min)
PR-score:

10
th place
46,577
+11,794
Albanian Wikipedia (sq)
PR-score:

103
rd place
39,314
-29,054
Banjar Wikipedia (bjn)
PR-score:

3
rd place
34,114
-5,335
AR-score:

6
th place
5,562
+600
Afrikaans Wikipedia (af)
PR-score:

93
rd place
33,321
-3,779
AR-score:

57
th place
33,996
+373
F-score:

27
th place
365
+2
Asturian Wikipedia (ast)
PR-score:

161
st place
30,573
-9,588
AR-score:

124
th place
32,019
+26
Malayalam Wikipedia (ml)
PR-score:

143
rd place
27,958
+2,245
F-score:

100
th place
276
+6
Marathi Wikipedia (mr)
PR-score:

68
th place
24,243
-6,383
AR-score:

85
th place
14,592
+16
F-score:

66
th place
79
0
Telugu Wikipedia (te)
PR-score:

94
th place
24,000
+16,250
AR-score:

195
th place
9,248
+951
F-score:

199
th place
62
+1
Welsh Wikipedia (cy)
PR-score:

102
nd place
21,688
+869
AR-score:

87
th place
23,711
+3,282
F-score:

59
th place
268
+10
Egyptian Arabic Wikipedia (arz)
PR-score:

66
th place
21,487
+57
AR-score:

38
th place
27,169
+300
F-score:

21
st place
569
+4
Swahili Wikipedia (sw)
PR-score:

44
th place
18,560
+3,583
Azerbaijani Wikipedia (az)
PR-score:

592
nd place
14,485
-8,600
F-score:

254
th place
125
+3
Esperanto Wikipedia (eo)
PR-score:

130
th place
14,002
-9,397
AR-score:

222
nd place
15,588
+63
Sardinian Wikipedia (sc)
PR-score:

5
th place
13,981
-2,525
AR-score:

31
st place
1,653
+160
F-score:

14
th place
38
0
Tamil Wikipedia (ta)
PR-score:

527
th place
11,650
-5,292
AR-score:

342
nd place
11,341
+121
F-score:

267
th place
132
+2
Irish Wikipedia (ga)
PR-score:

59
th place
11,553
-2,198
AR-score:

46
th place
16,217
+83
F-score:

18
th place
184
+3
Gujarati Wikipedia (gu)
PR-score:

58
th place
11,536
+1,263
AR-score:

244
th place
2,115
+21
F-score:

118
th place
54
0
Urdu Wikipedia (ur)
PR-score:

226
th place
11,331
-31,034
AR-score:

164
th place
12,780
+173
F-score:

104
th place
161
+20
Serbo-Croatian Wikipedia (sh)
PR-score:

640
th place
10,685
-7,874
F-score:

224
th place
135
0
Kurdish Wikipedia (ku)
PR-score:

50
th place
10,405
-2,417
AR-score:

217
th place
2,459
+286
F-score:

19
th place
80
+7
Ilokano Wikipedia (ilo)
PR-score:

62
nd place
9,740
+534
Cantonese Wikipedia (zh-yue)
PR-score:

473
rd place
9,492
-458
AR-score:

656
th place
2,069
+13
F-score:

203
rd place
35
0
Estonian Wikipedia (et)
PR-score:

1,073
rd place
8,941
-9,445
F-score:

989
th place
40
0
Latin Wikipedia (la)
PR-score:

191
st place
7,425
+169
AR-score:

147
th place
12,624
0
F-score:

110
th place
48
0
Norwegian (Nynorsk) Wikipedia (nn)
PR-score:

256
th place
6,929
-2,401
AR-score:

390
th place
7,057
+217
F-score:

297
th place
65
0
Central Bicolano Wikipedia (bcl)
PR-score:

51
st place
6,710
+3,554
AR-score:

90
th place
1,806
+791
F-score:

115
th place
42
+19
Sinhalese Wikipedia (si)
PR-score:

163
rd place
6,282
+4,490
AR-score:

823
rd place
356
0
Tagalog Wikipedia (tl)
PR-score:

365
th place
5,874
-1,244
AR-score:

790
th place
2,057
+11
F-score:

234
th place
51
+8
Icelandic Wikipedia (is)
PR-score:

213
th place
5,816
-2,354
AR-score:

625
th place
1,535
0
Scots Wikipedia (sco)
PR-score:

473
rd place
5,129
+1,032
AR-score:

545
th place
2,317
0
F-score:

428
th place
27
0
Venetian Wikipedia (vec)
PR-score:

72
nd place
3,983
-133
AR-score:

447
th place
400
0
F-score:

530
th place
1
0
Western Armenian Wikipedia (hyw)
PR-score:

98
th place
3,685
-4,969
AR-score:

525
th place
729
0
F-score:

196
th place
20
0
Belarusian (Taraškievica) Wikipedia (be-x-old)
PR-score:

416
th place
3,240
+193
AR-score:

320
th place
5,549
+200
F-score:

374
th place
27
+1
Aragonese Wikipedia (an)
PR-score:

183
rd place
3,094
-2,326
F-score:

72
nd place
32
0
Nepali Wikipedia (ne)
PR-score:

347
th place
3,067
+1,062
AR-score:

540
th place
1,302
+133
F-score:

385
th place
15
+4
Assamese Wikipedia (as)
PR-score:

273
rd place
2,402
-397
AR-score:

234
th place
1,422
+163
F-score:

250
th place
20
0
Haitian Wikipedia (ht)
PR-score:

68
th place
2,279
-799
F-score:

23
rd place
39
0
Gorontalo Wikipedia (gor)
PR-score:

51
st place
1,895
-4,871
F-score:

20
th place
9
0
Luxembourgish Wikipedia (lb)
PR-score:

356
th place
1,734
+1,518
AR-score:

681
st place
1,484
+118
F-score:

445
th place
6
+1
Belarusian Wikipedia (be)
PR-score:

1,411
th place
1,652
-283
AR-score:

1,448
th place
1,819
0
F-score:

751
st place
32
0
Santali Wikipedia (sat)
PR-score:

144
th place
1,643
-681
AR-score:

275
th place
217
+11
F-score:

190
th place
9
+1
Bavarian Wikipedia (bar)
PR-score:

455
th place
1,616
+150
AR-score:

1,992
nd place
149
0
F-score:

536
th place
3
0
Ladino Wikipedia (lad)
PR-score:

129
th place
1,571
-243
Balinese Wikipedia (ban)
PR-score:

116
th place
1,511
-307
AR-score:

89
th place
576
+100
F-score:

48
th place
8
+1
Sorani Wikipedia (ckb)
PR-score:

553
rd place
1,460
+452
AR-score:

415
th place
1,260
+93
F-score:

232
nd place
14
+1
Maithili Wikipedia (mai)
PR-score:

287
th place
1,435
-3,214
AR-score:

224
th place
425
0
Kannada Wikipedia (kn)
PR-score:

927
th place
1,285
-1,272
AR-score:

742
nd place
1,295
0
F-score:

438
th place
28
0
Ido Wikipedia (io)
PR-score:

416
th place
1,280
-1,539
AR-score:

348
th place
1,978
0
F-score:

341
st place
3
0
Western Punjabi Wikipedia (pnb)
PR-score:

287
th place
1,243
-156
AR-score:

279
th place
841
+26
F-score:

93
rd place
66
+16
Occitan Wikipedia (oc)
PR-score:

454
th place
1,172
-697
AR-score:

1,111
th place
739
0
F-score:

152
nd place
25
0
Sindhi Wikipedia (sd)
PR-score:

271
st place
1,114
-259
AR-score:

146
th place
882
+3
F-score:

81
st place
21
0
Somali Wikipedia (so)
PR-score:

339
th place
1,099
+539
AR-score:

273
rd place
640
+600
F-score:

350
th place
3
+1
South Azerbaijani Wikipedia (azb)
PR-score:

885
th place
1,058
+372
AR-score:

1,026
th place
600
0
Bashkir Wikipedia (ba)
PR-score:

974
th place
968
-936
AR-score:

831
st place
714
0
F-score:

344
th place
26
0
Interlingua Wikipedia (ia)
PR-score:

292
nd place
907
-30
AR-score:

235
th place
973
0
Classical Chinese Wikipedia (zh-classical)
West Frisian Wikipedia (fy)
PR-score:

413
th place
850
-550
Yoruba Wikipedia (yo)
PR-score:

527
th place
833
-1,000
F-score:

166
th place
9
0
Burmese Wikipedia (my)
PR-score:

1,383
rd place
630
+299
AR-score:

1,659
th place
263
+13
F-score:

795
th place
6
+1
Scottish Gaelic Wikipedia (gd)
PR-score:

695
th place
587
-104
AR-score:

399
th place
1,512
0
F-score:

267
th place
7
0
Acehnese Wikipedia (ace)
PR-score:

192
nd place
500
+400
F-score:

382
nd place
1
0
Erzya Wikipedia (myv)
PR-score:

294
th place
401
-576
AR-score:

378
th place
104
0
Avar Wikipedia (av)
PR-score:

318
th place
392
-88
AR-score:

598
th place
10
0
Faroese Wikipedia (fo)
PR-score:

980
th place
386
+87
AR-score:

1,454
th place
141
0
Bhojpuri Wikipedia (bh)
PR-score:

1,118
th place
380
+105
AR-score:

1,579
th place
41
+29
F-score:

910
th place
2
+1
Oriya Wikipedia (or)
PR-score:

1,158
th place
351
-490
AR-score:

833
rd place
451
-50
F-score:

319
th place
17
-1
Chuvash Wikipedia (cv)
PR-score:

706
th place
334
-102
AR-score:

260
th place
1,400
0
Yiddish Wikipedia (yi)
PR-score:

587
th place
277
-39
AR-score:

649
th place
177
-28
F-score:

247
th place
2
0
Breton Wikipedia (br)
PR-score:

1,211
th place
275
-350
AR-score:

615
th place
1,316
0
F-score:

442
nd place
5
0
Maltese Wikipedia (mt)
PR-score:

701
st place
229
-135
AR-score:

743
rd place
178
0
F-score:

362
nd place
3
0
Zulu Wikipedia (zu)
PR-score:

224
th place
222
-241
AR-score:

274
th place
68
0
F-score:

206
th place
2
0
Low Saxon Wikipedia (nds)
PR-score:

1,764
th place
219
-238
AR-score:

2,071
st place
149
0
F-score:

969
th place
3
0
Uzbek Wikipedia (uz)
PR-score:

2,424
th place
217
-105
AR-score:

3,382
nd place
66
0
F-score:

1,323
rd place
3
0
Alemannic Wikipedia (als)
AR-score:

2,936
th place
141
0
F-score:

627
th place
4
0
Tatar Wikipedia (tt)
PR-score:

2,705
th place
173
-24
AR-score:

2,133
rd place
285
0
F-score:

304
th place
14
0
Picard Wikipedia (pcd)
PR-score:

299
th place
168
-388
AR-score:

612
th place
9
0
F-score:

143
rd place
2
0
Wu Wikipedia (wuu)
PR-score:

622
nd place
166
+133
AR-score:

746
th place
66
0
Tulu Wikipedia (tcy)
PR-score:

404
th place
150
-500
Hausa Wikipedia (ha)
PR-score:

479
th place
142
-279
AR-score:

368
th place
71
0
F-score:

358
th place
3
0
Goan Konkani Wikipedia (gom)
PR-score:

124
th place
133
-133
Khmer Wikipedia (km)
PR-score:

1,220
th place
122
-83
AR-score:

1,225
th place
31
0
F-score:

235
th place
5
0
Tajik Wikipedia (tg)
PR-score:

1,396
th place
111
-250
AR-score:

1,047
th place
127
0
F-score:

708
th place
2
0
Tuvan Wikipedia (tyv)
PR-score:

571
st place
83
-58
AR-score:

805
th place
22
+5
F-score:

208
th place
3
0
Kapampangan Wikipedia (pam)
PR-score:

1,049
th place
75
-1
Kazakh Wikipedia (kk)
PR-score:

5,682
nd place
68
+4
AR-score:

6,161
st place
46
0
F-score:

3,948
th place
1
0
Palatinate German Wikipedia (pfl)
PR-score:

338
th place
66
0
AR-score:

351
st place
33
0
F-score:

347
th place
1
0
Gilaki Wikipedia (glk)
PR-score:

258
th place
63
-27
AR-score:

281
st place
18
0
F-score:

268
th place
1
0
Quechua Wikipedia (qu)
PR-score:

726
th place
58
-250
AR-score:

715
th place
83
0
Igbo Wikipedia (ig)
PR-score:

460
th place
53
-40
AR-score:

403
rd place
26
0
Mirandese Wikipedia (mwl)
PR-score:

1,217
th place
50
0
AR-score:

1,085
th place
50
0
F-score:

690
th place
2
0
Kabyle Wikipedia (kab)
PR-score:

347
th place
50
0
AR-score:

203
rd place
50
0
F-score:

354
th place
1
0
Chechen Wikipedia (ce)
PR-score:

2,171
st place
35
-27
AR-score:

2,492
nd place
15
0
F-score:

1,906
th place
1
0
Sanskrit Wikipedia (sa)
PR-score:

706
th place
34
-71
Lombard Wikipedia (lmo)
PR-score:

1,282
nd place
25
-50
AR-score:

390
th place
375
0
F-score:

834
th place
1
0
Turkmen Wikipedia (tk)
PR-score:

642
nd place
16
-17
AR-score:

335
th place
41
0
F-score:

314
th place
1
0
Piedmontese Wikipedia (pms)
PR-score:

205
th place
12
-100
Lao Wikipedia (lo)
PR-score:

767
th place
9
0
AR-score:

857
th place
1
0
Kashubian Wikipedia (csb)
PR-score:

175
th place
7
-62
Newar Wikipedia (new)
Papiamentu Wikipedia (pap)
PR-score:

338
th place
4
-5
AR-score:

331
st place
4
0
F-score:

231
st place
1
0
Nahuatl Wikipedia (nah)
PR-score:

236
th place
4
0
AR-score:

212
th place
32
0