Cita APA (7a ed.)

Walker, C. E. (1936). Evolution and heredity: Theories and problems. A. & C. Black ltd.

Cita Chicago Style (17a ed.)

Walker, Charles Edward. Evolution and Heredity: Theories and Problems. London: A. & C. Black ltd, 1936.

Cita MLA (9a ed.)

Walker, Charles Edward. Evolution and Heredity: Theories and Problems. A. & C. Black ltd, 1936.