APA (7th ed.) Citation

Gutfreund, H. (1965). An introduction to the study of enzymes. Blackwell.

Chicago Style (17th ed.) Citation

Gutfreund, Herbert. An Introduction to the Study of Enzymes. Oxford: Blackwell, 1965.

MLA (9th ed.) Citation

Gutfreund, Herbert. An Introduction to the Study of Enzymes. Blackwell, 1965.

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