Dyfyniad APA

Northrop, J., & ...[et al.]. (1939). Crystalline enzymes/2nd ed (2nd ed.). Columbia unicersity.

Dyfyniad Arddull Chicago

Northrop, John, and ...[et al.]. Crystalline Enzymes/2nd Ed. 2nd ed. New york: Columbia unicersity, 1939.

Dyfyniad MLA

Northrop, John, and ...[et al.]. Crystalline Enzymes/2nd Ed. 2nd ed. Columbia unicersity, 1939.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.