APA (7th ed.) Citation

Stefan George Kolloquium, Heftrich, E., Klussmann, P. G., & Schrimpf, H. J. (1971). Stefan George Kolloquium. Wienand.

Chicago Style (17th ed.) Citation

Stefan George Kolloquium, Eckhard Heftrich, Paul Gerhard Klussmann, and Hans Joachim Schrimpf. Stefan George Kolloquium. Köln: Wienand, 1971.

MLA (9th ed.) Citation

Stefan George Kolloquium, et al. Stefan George Kolloquium. Wienand, 1971.