APA (7th ed.) Citation

Frey, H., Czernin, F. J., & Engeler, U. (2014). Sätze. Roughbooks.

Chicago Style (17th ed.) Citation

Frey, Hans-Jost, Franz Josef Czernin, and Urs Engeler. Sätze. Zürich ; Rettenegg ; Solothurn: Roughbooks, 2014.

MLA (9th ed.) Citation

Frey, Hans-Jost, et al. Sätze. Roughbooks, 2014.