Holmes, James R. and Friedman, Norman
"German Warships of World War I: The Royal Navy's Official Guide to the Capital Ships, Cruisers, Destroyers, Submarines and Small Craft, 1914-1918,"
Naval War College Review: Vol. 47
, Article 24.
Available at: http://digital-commons.usnwc.edu/nwc-review/vol47/iss2/24