German submarine U-40 (1938) (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "German submarine U-40 (1938)" in English language version.

refsWebsite
Global rank English rank
2,553rd place
1,888th place
1st place
1st place

uboat.net

  • Helgason, Guðmundur. "The Type IXA boat U-40". German U-boats of WWII - uboat.net. Retrieved 3 April 2010.
  • Helgason, Guðmundur. "Type IXA". German U-boats of WWII - uboat.net. Retrieved 1 April 2010.
  • Helgason, Guðmundur. "Patrol info for U-40 (First patrol)". German U-boats of WWII - uboat.net. Retrieved 2 May 2010.
  • Helgason, Guðmundur. "Patrol info for U-40 (Second patrol)". German U-boats of WWII - uboat.net. Retrieved 2 May 2010.

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