German submarine U-868 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "German submarine U-868" in English language version.

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Gröner 1991, p. 68. Gröner, Eric; Jung, Dieter; Maass, Martin (1991). German Warships 1815-1945: U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.

Helgason, Guðmundur. "The Type XIC/40 boat U-868". German U-boats of WWII - uboat.net. Retrieved 31 January 2015.
Helgason, Guðmundur. "Operation Deadlight - Fates". German U-boats of WWII - uboat.net. Retrieved 7 December 2014.
Helgason, Guðmundur. "Ships hit by U-868". German U-boats of WWII - uboat.net. Retrieved 13 February 2014.