Style de citation APA

Röhl, J. C. G. (1991). 1914: Delusion or design? The outbreak of World War I.

Style de citation Chicago

Röhl, John C. G. "1914: Delusion or Design?" The Outbreak of World War I 1991.

Style de citation MLA

Röhl, John C. G. "1914: Delusion or Design?" The Outbreak of World War I, 1991.