Cita APA (7a ed.)

Sidgwick, H. (1967). The methods of ethics (7th ed., [reprinted].). Macmillan.

Cita Chicago Style (17a ed.)

Sidgwick, Henry. The Methods of Ethics. 7th ed., [reprinted]. London [etc.]: Macmillan, 1967.

Cita MLA (9a ed.)

Sidgwick, Henry. The Methods of Ethics. 7th ed., [reprinted]. Macmillan, 1967.