Cita APA (7a ed.)

Osborn, M. (1910). Franz Krüger. Velhagen.

Cita Chicago Style (17a ed.)

Osborn, Max. Franz Krüger. Bielefeld: Velhagen, 1910.

Cita MLA (9a ed.)

Osborn, Max. Franz Krüger. Velhagen, 1910.