Cita APA (7a ed.)

Snyder, L. H. (1940). The Principles of heredity (2nd edition.). D. C. Heath.

Cita Chicago Style (17a ed.)

Snyder, Laurence H. The Principles of Heredity. 2nd edition. Boston: D. C. Heath, 1940.

Cita MLA (8a ed.)

Snyder, Laurence H. The Principles of Heredity. 2nd edition. D. C. Heath, 1940.