APA aipamena

Northrop, J. H., Kunitz, M., & Herriot, R. M. (1948). Crystalline enzymes (2nd ed., rev. and enl.). Columbia University Press.

Chicago Style aipamena

Northrop, John Howard, Moses Kunitz, and Roger Moss Herriot. Crystalline Enzymes. 2nd ed., rev. and enl. New York: Columbia University Press, 1948.

MLA aipamena

Northrop, John Howard, et al. Crystalline Enzymes. 2nd ed., rev. and enl. Columbia University Press, 1948.