APA (7th ed.) Citation

Wolf, J., Seitz, E., & Neumaier, H. (1989). Marketing. Manz.

Chicago Style (17th ed.) Citation

Wolf, Jakob, Erwin Seitz, and Hans-Georg Neumaier. Marketing. München: Manz, 1989.

MLA (9th ed.) Citation

Wolf, Jakob, et al. Marketing. Manz, 1989.