Cita APA (7th ed.)

Ridley, M. (1985). The problems of evolution. Oxford University Press.

Cita Chicago (17th ed.)

Ridley, Mark. The Problems of Evolution. Oxford [Oxfordshire]: Oxford University Press, 1985.

Cita MLA (9th ed.)

Ridley, Mark. The Problems of Evolution. Oxford University Press, 1985.

Atenció: Aquestes cites poden no estar 100% correctes.