Cita APA (7a ed.)

Sumner, J. B., & Somers, G. F. (1947). Chemistry and methods of enzymes. Academic Press.

Cita Chicago Style (17a ed.)

Sumner, J B., y G. Fred Somers. Chemistry and Methods of Enzymes. New York: Academic Press, 1947.

Cita MLA (9a ed.)

Sumner, J B., y G. Fred Somers. Chemistry and Methods of Enzymes. Academic Press, 1947.