U-81号潜艇 (1916年) (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "U-81号潜艇 (1916年)" in Chinese language version.

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archive.org

Herzog，第48頁. Herzog, Bodo. Deutsche U-Boote 1906–1966. Erlangen: Karl Müller Verlag. 1993. ISBN 3-86070-036-7.
Herzog，第139頁. Herzog, Bodo. Deutsche U-Boote 1906–1966. Erlangen: Karl Müller Verlag. 1993. ISBN 3-86070-036-7.
Herzog，第123頁. Herzog, Bodo. Deutsche U-Boote 1906–1966. Erlangen: Karl Müller Verlag. 1993. ISBN 3-86070-036-7.
Herzog，第68頁. Herzog, Bodo. Deutsche U-Boote 1906–1966. Erlangen: Karl Müller Verlag. 1993. ISBN 3-86070-036-7.

Helgason, Guðmundur. WWI U-boats: U 81. German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. [2010-01-25].
Helgason, Guðmundur. WWI U-boat commanders: Raimund Weisbach. German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. [2015-01-20].
Helgason, Guðmundur. Ships hit during WWI: Mantola. German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. [2021-11-16].
Helgason, Guðmundur. Ships hit by U 81. German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. [2015-01-20].