Cita APA (7a ed.)

Maassen, H. (1969). Potsdam (o.A.). Brockhaus.

Cita Chicago Style (17a ed.)

Maassen, Hanns. Potsdam. o.A. Leipzig: Brockhaus, 1969.

Cita MLA (8a ed.)

Maassen, Hanns. Potsdam. o.A. Brockhaus, 1969.