Cita APA (7a ed.)

Eyck, E. (1944). Bismarck. Eugen Rentsch.

Cita Chicago Style (17a ed.)

Eyck, Erich. Bismarck. Erlenbach: Eugen Rentsch, 1944.

Cita MLA (9a ed.)

Eyck, Erich. Bismarck. Eugen Rentsch, 1944.