APA (7th ed.) Citation

Koch, E., Felix, R. H., & Schneider, C. (1979). Read the skin. E. Merck.

Chicago Style (17th ed.) Citation

Koch, Ernst, Robin H. Felix, and Christa Schneider. Read the Skin. Darmstadt: E. Merck, 1979.

MLA (8th ed.) Citation

Koch, Ernst, et al. Read the Skin. E. Merck, 1979.