APA (7th ed.) Citation

Esser, K., & Schwartzkopff, J. (1968). Biologie in Bochum ([Sonderdr.].).

Chicago Style (17th ed.) Citation

Esser, Karl, and Johann Schwartzkopff. Biologie in Bochum. [Sonderdr.]. 1968.

MLA (9th ed.) Citation

Esser, Karl, and Johann Schwartzkopff. Biologie in Bochum. [Sonderdr.]. 1968.

Warning: These citations may not always be 100% accurate.