Herwig 1998, tr. 24-26 Herwig, Holger (1998). "Luxury" Fleet: The Imperial German Navy 1888–1918. Amherst, New York: Humanity Books. ISBN9781573922869. OCLC57239454.
Herwig 1998, tr. 45 Herwig, Holger (1998). "Luxury" Fleet: The Imperial German Navy 1888–1918. Amherst, New York: Humanity Books. ISBN9781573922869. OCLC57239454.