APA (7th ed.) Citation

Chmielorz, R., Kopp, A., Leisch, M., & Niepel, M. (1985). Kratzer.

Chicago Style (17th ed.) Citation

Chmielorz, Rilo, Andreas Kopp, Marie-Lu Leisch, and Manfred Niepel. Kratzer. Köln, 1985.

MLA (9th ed.) Citation

Chmielorz, Rilo, et al. Kratzer. 1985.