APA (7th ed.) Citation

Ritter, H. (2010). Weltraum. Aulis-Verl. Deubner.

Chicago Style (17th ed.) Citation

Ritter, Helga. Weltraum. Köln: Aulis-Verl. Deubner, 2010.

MLA (9th ed.) Citation

Ritter, Helga. Weltraum. Aulis-Verl. Deubner, 2010.

Warning: These citations may not always be 100% accurate.