APA (7th ed.) Citation

Arzt-Grabner, P., Ernst, M., & Naumann, T. (2009). Reisen.

Chicago Style (17th ed.) Citation

Arzt-Grabner, Peter, Michael Ernst, and Thomas Naumann. Reisen. 2009.

MLA (9th ed.) Citation

Arzt-Grabner, Peter, et al. Reisen. 2009.