Cita APA (7a ed.)

Kirch, P. (2014). TOP - Erdkunde. Westermann.

Cita Chicago Style (17a ed.)

Kirch, Peter. TOP - Erdkunde. Braunschweig: Westermann, 2014.

Cita MLA (9a ed.)

Kirch, Peter. TOP - Erdkunde. Westermann, 2014.