Cita APA (7th ed.)

Giersberg, H., & Knitter, H. (1974). Potsdam. Brockhaus.

Cita Chicago (17th ed.)

Giersberg, Hans-Joachim, i Hartmut Knitter. Potsdam. Leipzig: Brockhaus, 1974.

Cita MLA (8th ed.)

Giersberg, Hans-Joachim, i Hartmut Knitter. Potsdam. Brockhaus, 1974.