APA (7th ed.) Citation

Ruge, G., Schmidt, H., & Weizsäcker, R. v. (2008). Russland. Beck.

Chicago Style (17th ed.) Citation

Ruge, Gerd, Helmut Schmidt, and Richard von Weizsäcker. Russland. München: Beck, 2008.

MLA (8th ed.) Citation

Ruge, Gerd, et al. Russland. Beck, 2008.