Extraversion and introversion (English Wikipedia)

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jstor.org (Global: 23^rd place; English: 15^th place)

Jung CG (1910). "The Association Method". The American Journal of Psychology. 21 (2): 219–269. doi:10.2307/1413002. hdl:11858/00-001M-0000-002B-AD55-2. ISSN 0002-9556. JSTOR 1413002.
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pubmed.ncbi.nlm.nih.gov

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academia.edu (Global: 105^th place; English: 99^th place)

adsabs.harvard.edu (Global: 14^th place; English: 9^th place)

apa.org (Global: 1,327^th place; English: 1,093^rd place)

archive.org (Global: 6^th place; English: 6^th place)

bbc.co.uk (Global: 11^th place; English: 10^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

cbsnews.com (Global: 136^th place; English: 93^rd place)

clevelandclinic.org (Global: 4,153^rd place; English: 2,922^nd place)

doi.org (Global: 2^nd place; English: 2^nd place)

elsevier.com (Global: 365^th place; English: 372^nd place)

eur.nl (Global: low place; English: 9,308^th place)

findarticles.com (Global: 644^th place; English: 424^th place)

forbes.com (Global: 71^st place; English: 54^th place)

hdl.handle.net (Global: 66^th place; English: 34^th place)

jstor.org (Global: 23^rd place; English: 15^th place)

khanacademy.org (Global: 6,031^st place; English: 5,284^th place)

nationalgeographic.com (Global: 489^th place; English: 425^th place)

nih.gov (Global: 5^th place; English: 5^th place)

npr.org (Global: 114^th place; English: 75^th place)

proquest.com (Global: 121^st place; English: 59^th place)

psu.edu (Global: 299^th place; English: 159^th place)

psychologytoday.com (Global: 2,259^th place; English: 1,691^st place)

researchgate.net (Global: 96^th place; English: 89^th place)

seattlepi.com (Global: 1,619^th place; English: 867^th place)

semanticscholar.org (Global: 15^th place; English: 8^th place)

springer.com (Global: 182^nd place; English: 172^nd place)

ted.com (Global: 2,839^th place; English: 2,020^th place)

telegraph.co.uk (Global: 40^th place; English: 27^th place)

theguardian.com (Global: 16^th place; English: 11^th place)

time.com (Global: 84^th place; English: 63^rd place)

web.archive.org (Global: 1^st place; English: 1^st place)

worldcat.org (Global: 4^th place; English: 4^th place)

wsj.com (Global: 94^th place; English: 66^th place)