APA (7th ed.) Citation

Creutz, G., & Hoffmann, G. (1956). Vögel am Gebirgsbach (o.A.). Ziemsen.

Chicago Style (17th ed.) Citation

Creutz, Gerhard, and Georg Hoffmann. Vögel Am Gebirgsbach. o.A. Wittenberg: Ziemsen, 1956.

MLA (8th ed.) Citation

Creutz, Gerhard, and Georg Hoffmann. Vögel Am Gebirgsbach. o.A. Ziemsen, 1956.

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