APA (7th ed.) Citation

Koepf, H. H., Pettersson, B. D., & Schaumann, W. (1976). Bio-dynamic agriculture: An introduction. Anthroposophic Press.

Chicago Style (17th ed.) Citation

Koepf, Herbert H., Bo D. Pettersson, and Wolfgang Schaumann. Bio-dynamic Agriculture: An Introduction. Spring Valley, N.Y.: Anthroposophic Press, 1976.

MLA (9th ed.) Citation

Koepf, Herbert H., et al. Bio-dynamic Agriculture: An Introduction. Anthroposophic Press, 1976.