APA (7th ed.) Citation

Keller, H. (2008). Simon Marius - der vergessene Astronom.

Chicago Style (17th ed.) Citation

Keller, Hans-Ulrich. Simon Marius - Der Vergessene Astronom. 2008.

MLA (9th ed.) Citation

Keller, Hans-Ulrich. Simon Marius - Der Vergessene Astronom. 2008.

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