APA (7th ed.) Citation

Karfeld, K. P., Dirks, W., & Hausmann, M. (1957). Germany in color. Studio Publications.

Chicago Style (17th ed.) Citation

Karfeld, Kurt Peter, Walter Dirks, and Manfred Hausmann. Germany in Color. New York: Studio Publications, 1957.

MLA (9th ed.) Citation

Karfeld, Kurt Peter, et al. Germany in Color. Studio Publications, 1957.