APA (7th ed.) Citation

Appl, F., Hoffmeister, F., Lukas, F., Yildiz, E., & Gay, M. (2006). One day in Europe. Piffl Medien.

Chicago Style (17th ed.) Citation

Appl, Florian, Florian Hoffmeister, Florian Lukas, Erdal Yildiz, and Megan Gay. One Day in Europe. [S.l.]: Piffl Medien, 2006.

MLA (9th ed.) Citation

Appl, Florian, et al. One Day in Europe. Piffl Medien, 2006.