Cita APA (7a ed.)

Huxley, T. H. (1894). Evolution and ethics: And other essays. Macmillan.

Cita Chicago Style (17a ed.)

Huxley, Thomas Henry. Evolution and Ethics: And Other Essays. New York: Macmillan, 1894.

Cita MLA (8a ed.)

Huxley, Thomas Henry. Evolution and Ethics: And Other Essays. Macmillan, 1894.