APA (7th ed.) Citation

Krull, E., Fetting, H., & Saeger, W. (1964). Herbert Ihering (o.A.). Henschelverlag.

Chicago Style (17th ed.) Citation

Krull, Edith, Hugo Fetting, and Willy Saeger. Herbert Ihering. o.A. Berlin: Henschelverlag, 1964.

MLA (8th ed.) Citation

Krull, Edith, et al. Herbert Ihering. o.A. Henschelverlag, 1964.