APA (7th ed.) Citation

Ulrich, W. (2017). Aktiv - passiv. Westermann.

Chicago Style (17th ed.) Citation

Ulrich, Winfried. Aktiv - Passiv. Braunschweig: Westermann, 2017.

MLA (9th ed.) Citation

Ulrich, Winfried. Aktiv - Passiv. Westermann, 2017.

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