APA

Kopp G., Buttner S. & Alberti J. (2007). Planet 3. Munchen: Hueber Verlag.

Chicago

Kopp G, Buttner S and Alberti J. 2007. Planet 3. Munchen: Hueber Verlag.

Harvard

Kopp G., Buttner S. and Alberti J. (2007). Planet 3. Munchen: Hueber Verlag.

MLA

Kopp G, Buttner S and Alberti J. Planet 3. Munchen: Hueber Verlag. 2007.