APA (7th ed.) Citation

Colowick, S. P., & Kaplan, N. O. (1955). Preparation and assay of enzymes. Academic Press.

Chicago Style (17th ed.) Citation

Colowick, Sidney P., and N. O. Kaplan. Preparation and Assay of Enzymes. New York: Academic Press, 1955.

MLA (8th ed.) Citation

Colowick, Sidney P., and N. O. Kaplan. Preparation and Assay of Enzymes. Academic Press, 1955.