APA (7th ed.) Citation

Kusch, L., Rosenthal, H., & Jung, H. (1975). Mathematik. Girardet.

Chicago Style (17th ed.) Citation

Kusch, Lothar, Hans-Joachim Rosenthal, and Heinz Jung. Mathematik. Essen: Girardet, 1975.

MLA (9th ed.) Citation

Kusch, Lothar, et al. Mathematik. Girardet, 1975.