APA (7th ed.) Citation

Gottschalk, R. (1959). Biologie I (o.A.). Volk und Wissen.

Chicago Style (17th ed.) Citation

Gottschalk, Rudolph. Biologie I. o.A. Berlin: Volk und Wissen, 1959.

MLA (8th ed.) Citation

Gottschalk, Rudolph. Biologie I. o.A. Volk und Wissen, 1959.

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