Cita APA (7a ed.)

Urmson, J. O. (1994). Aristotle's ethics (1st pub., 6th reprint.). Blackwell.

Cita Chicago Style (17a ed.)

Urmson, J. O. Aristotle's Ethics. 1st pub., 6th reprint. Oxford [etc.]: Blackwell, 1994.

Cita MLA (9a ed.)

Urmson, J. O. Aristotle's Ethics. 1st pub., 6th reprint. Blackwell, 1994.