APA

Kopp G., . (2007). Planet 3. Ismaning: Hueber Verlag.

Chicago

Kopp G, . 2007. Planet 3. Ismaning: Hueber Verlag.

Harvard

Kopp G., . (2007). Planet 3. Ismaning: Hueber Verlag.

MLA

Kopp G, . Planet 3. Ismaning: Hueber Verlag. 2007.