APA (7th ed.) Citation

Klapper, J., & McMahon, T. (2006). Aktion Grammatik! / John Klapper, Trudi McMahon (3rd ed.). Hodder Murray.

Chicago Style (17th ed.) Citation

Klapper, John, and Trudi McMahon. Aktion Grammatik! / John Klapper, Trudi McMahon. 3rd ed. London: Hodder Murray, 2006.

MLA (9th ed.) Citation

Klapper, John, and Trudi McMahon. Aktion Grammatik! / John Klapper, Trudi McMahon. 3rd ed. Hodder Murray, 2006.

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