Cita APA (7a ed.)

Poschinger, M. v. (1900). Kaiser Friedrich. Schröder.

Cita Chicago Style (17a ed.)

Poschinger, Margaretha von. Kaiser Friedrich. Berlin: Schröder, 1900.

Cita MLA (8a ed.)

Poschinger, Margaretha von. Kaiser Friedrich. Schröder, 1900.