APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Kaplan, Nathan O., and Sidney P. Colowick. Preparation and Assay of Enzymes. London: Academic Press, 1955.

MLA (8th ed.) Citation

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

Warning: These citations may not always be 100% accurate.