Cita APA (7a ed.)

Birkner, K. (1982). Harz. Tourist Verlag.

Cita Chicago Style (17a ed.)

Birkner, Karlheinz. Harz. Berlin: Tourist Verlag, 1982.

Cita MLA (8a ed.)

Birkner, Karlheinz. Harz. Tourist Verlag, 1982.