Cita APA (7a ed.)

Koch, H. (1937). Caspar Vopelius: Kartograph in Köln 1511-1561. Vopelius.

Cita Chicago Style (17a ed.)

Koch, Herbert. Caspar Vopelius: Kartograph in Köln 1511-1561. Jena: Vopelius, 1937.

Cita MLA (8a ed.)

Koch, Herbert. Caspar Vopelius: Kartograph in Köln 1511-1561. Vopelius, 1937.