Cita APA (7a ed.)

Richards, R. J. Darwin on mind, morals and emotions: Robert J. Richards. The Cambridge Companion to Darwin.(2006).

Cita Chicago Style (17a ed.)

Richards, Robert J. "Darwin on Mind, Morals and Emotions: Robert J. Richards." The Cambridge Companion to Darwin.(2006) .

Cita MLA (8a ed.)

Richards, Robert J. "Darwin on Mind, Morals and Emotions: Robert J. Richards." The Cambridge Companion to Darwin.(2006), .