Cita APA (7th ed.)

Poschinger, M. v. (1899). Kaiser Friedrich. Schröder.

Cita Chicago (17th ed.)

Poschinger, Margaretha von. Kaiser Friedrich. Berlin: Schröder, 1899.

Cita MLA (8th ed.)

Poschinger, Margaretha von. Kaiser Friedrich. Schröder, 1899.