Cita APA (7th ed.)

Ridley, M. (1996). Evolution (2nd ed.). Blackwell Science.

Cita Chicago (17th ed.)

Ridley, Mark. Evolution. 2nd ed. Cambridge, Mass., USA: Blackwell Science, 1996.

Cita MLA (9th ed.)

Ridley, Mark. Evolution. 2nd ed. Blackwell Science, 1996.