APA (7th ed.) Citation

Madden, T. F. (2008). Die Kreuzzüge. [publisher not identified].

Chicago Style (17th ed.) Citation

Madden, Thomas F. Die Kreuzzüge. [Köln]: [publisher not identified], 2008.

MLA (8th ed.) Citation

Madden, Thomas F. Die Kreuzzüge. [publisher not identified], 2008.

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