German spies at bay,
being an actual record of the German espionage in Great Britain during the years 1914-1918,
comp. from official sources by Sidney Theodore Felstead ...
APA Citation
Felstead, S. Theodore. (1920). German spies at bay: being an actual record of the German espionage in Great Britain during the years 1914-1918. New York: Bretano's.
MLA Citation
Felstead, Sidney Theodore, 1888-. German Spies At Bay: Being an Actual Record of the German Espionage In Great Britain During the Years 1914-1918. New York: Bretano's, 1920.
Warning: These citations may not always be complete (especially for serials).