Cita APA (7a ed.)

(1954). Maria Koeniging: In Köln-Marienburg. J. P. Bachem.

Cita Chicago Style (17a ed.)

Maria Koeniging: In Köln-Marienburg. Köln: J. P. Bachem, 1954.

Cita MLA (9a ed.)

Maria Koeniging: In Köln-Marienburg. J. P. Bachem, 1954.