APA (7th ed.) Citation

Friedemann, C. (1973). Das Weltall. Urania Verlag.

Chicago Style (17th ed.) Citation

Friedemann, Christian. Das Weltall. Leipzig: Urania Verlag, 1973.

MLA (8th ed.) Citation

Friedemann, Christian. Das Weltall. Urania Verlag, 1973.

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