APA (7th ed.) Citation

Schubert, U. (2005). Helmut Zahn.

Chicago Style (17th ed.) Citation

Schubert, Ulrich. Helmut Zahn. 2005.

MLA (9th ed.) Citation

Schubert, Ulrich. Helmut Zahn. 2005.

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