SM U-40 (Alemanha) (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "SM U-40 (Alemanha)" in Portuguese language version.

refsWebsite

Global rank Portuguese rank

5^th place

5^th place

2,553^rd place

1,836^th place

8^th place

13^th place

1timesonline.co.uk

241^st place

304^th place

bbc.co.uk

news.bbc.co.uk

«Footage unveils U-boat secrets» (em inglês). 30 de março de 2009

timesonline.co.uk

McIntosh, Lindsay (27 de março de 2009). «North Sea U-boat recovered a[f]ter 100 years». The Times

uboat.net

«Kapitänleutnant Gerhardt Fürbringer - German and Austrian U-boats of World War One - Kaiserliche Marine - uboat.net». uboat.net (em inglês). Consultado em 31 de outubro de 2017

worldcat.org

Erich., Gröner,; Martin., Maass,. German warships 1815-1945. [S.l.]: Conway Maritime. ISBN 0851775934. OCLC 24695694
1937-, Messimer, Dwight R., (2002). Verschollen : World War I U-boat losses. Annapolis, Md.: Naval Institute Press. ISBN 155750475X. OCLC 49386332