Room 40 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Room 40" in English language version.

refsWebsite

Global rank English rank

6^th place

6^th place

5^th place

5^th place

2^nd place

2^nd place

1web.archive.org

1^st place

1^st place

7,043^rd place

4,687^th place

1historyextra.com

6,615^th place

4,325^th place

1iranicaonline.org

358^th place

433^rd place

1books.google.com

3^rd place

3^rd place

1semanticscholar.org

11^th place

8^th place

8^th place

10^th place

284^th place

187^th place

1wikipedialibrary.wmflabs.org

low place

low place

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

Tuchman 1958, pp. 20–21. Tuchman, Barbara (1958). The Zimmermann Telegram. New York: Ballantine Books. OCLC 957495910.
Andrew 1986, p. 87. Andrew, Christopher (1986). Her Majesty's Secret Service: The Making of the British Intelligence Community. New York: Viking. ISBN 0-670-80941-1.
Andrew 1986, p. 90. Andrew, Christopher (1986). Her Majesty's Secret Service: The Making of the British Intelligence Community. New York: Viking. ISBN 0-670-80941-1.

bbc.co.uk (Global: 8^th place; English: 10^th place)

"Why was the Zimmerman Telegram so important?". BBC. 17 January 2017. Retrieved 17 January 2017. It was, many believed, the single greatest intelligence triumph for Britain in World War One.

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

Dooley, John F. (2018). History of Cryptography and Cryptanalysis: Codes, Ciphers, and Their Algorithms. Springer. p. 89. ISBN 978-3-319-90443-6.

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

Winkler 2009, pp. 848–849. Winkler, Jonathan Reed (July 2009). "Information Warfare in World War I". The Journal of Military History. 73 (3): 845–867. doi:10.1353/jmh.0.0324. ISSN 1543-7795. S2CID 201749182.
Martin Robertson; David Gill (2004). "Beazley, Sir John Davidson (1885–1970)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/30664. Retrieved 15 June 2012. (Subscription, Wikipedia Library access or UK public library membership required.)

historyextra.com (Global: 6,615^th place; English: 4,325^th place)

"The telegram that brought America into the First World War". BBC History Magazine. 17 January 2017. Retrieved 17 January 2017.

iranicaonline.org (Global: 358^th place; English: 433^rd place)

iranica

nsa.gov (Global: 7,043^rd place; English: 4,687^th place)

Lieutenant Commander James T. Westwood, USN. "Electronic Warfare and Signals Intelligence at the Outset of World War I" (PDF). NSA. Archived from the original (PDF) on 5 August 2012. Retrieved 4 May 2009. After the war, it was estimated that Room 40 had solved some 15,000 German naval and diplomatic communications, a very great number considering that recoveries were hand-generated.

oxforddnb.com (Global: 284^th place; English: 187^th place)

Martin Robertson; David Gill (2004). "Beazley, Sir John Davidson (1885–1970)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/30664. Retrieved 15 June 2012. (Subscription, Wikipedia Library access or UK public library membership required.)

semanticscholar.org (Global: 11^th place; English: 8^th place)

api.semanticscholar.org

Winkler 2009, pp. 848–849. Winkler, Jonathan Reed (July 2009). "Information Warfare in World War I". The Journal of Military History. 73 (3): 845–867. doi:10.1353/jmh.0.0324. ISSN 1543-7795. S2CID 201749182.

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

Lieutenant Commander James T. Westwood, USN. "Electronic Warfare and Signals Intelligence at the Outset of World War I" (PDF). NSA. Archived from the original (PDF) on 5 August 2012. Retrieved 4 May 2009. After the war, it was estimated that Room 40 had solved some 15,000 German naval and diplomatic communications, a very great number considering that recoveries were hand-generated.

wikipedialibrary.wmflabs.org (Global: low place; English: low place)

Martin Robertson; David Gill (2004). "Beazley, Sir John Davidson (1885–1970)". Oxford Dictionary of National Biography (online ed.). Oxford University Press. doi:10.1093/ref:odnb/30664. Retrieved 15 June 2012. (Subscription, Wikipedia Library access or UK public library membership required.)

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

Tuchman 1958, pp. 20–21. Tuchman, Barbara (1958). The Zimmermann Telegram. New York: Ballantine Books. OCLC 957495910.
Johnson 1997, pp. 32. Johnson, John (1997). The Evolution of British Sigint, 1653–1939. London: HMSO. OCLC 52130886.
Winkler 2009, pp. 848–849. Winkler, Jonathan Reed (July 2009). "Information Warfare in World War I". The Journal of Military History. 73 (3): 845–867. doi:10.1353/jmh.0.0324. ISSN 1543-7795. S2CID 201749182.