APA (7th ed.) Citation

Schäfer, T., & Gerdes, A. (2014). Vorwort.

Chicago Style (17th ed.) Citation

Schäfer, Thomas, and Andreas Gerdes. Vorwort. 2014.

MLA (9th ed.) Citation

Schäfer, Thomas, and Andreas Gerdes. Vorwort. 2014.

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