APA (7th ed.) Citation

Kopp G. Gabriele, Büttner S. Siegfried, & Alberti J. Josef. (2011). Planet 2: Arbeitsbuch. Munchen, Hueber Verlag, 2011.

Chicago Style (17th ed.) Citation

Kopp G. Gabriele, Büttner S. Siegfried, and Alberti J. Josef. Planet 2: Arbeitsbuch. Munchen, Hueber Verlag, 2011, 2011.

MLA (9th ed.) Citation

Kopp G. Gabriele, et al. Planet 2: Arbeitsbuch. Munchen, Hueber Verlag, 2011, 2011.

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