Cita APA (7th ed.)

Moore, G. E., & Baldwin, T. (1993). Principia Ethica (Revised edition.). Cambridge University Press.

Cita Chicago (17th ed.)

Moore, George Edward, i Thomas Baldwin. Principia Ethica. Revised edition. Cambridge, United Kingdom: Cambridge University Press, 1993.

Cita MLA (9th ed.)

Moore, George Edward, i Thomas Baldwin. Principia Ethica. Revised edition. Cambridge University Press, 1993.