APA (7th ed.) Citation

Sidgwick, H. (1967). Outlines of the History of Ethics. Macmillan.

Chicago Style (17th ed.) Citation

Sidgwick, Henry. Outlines of the History of Ethics. Macmillan, 1967.

MLA (9th ed.) Citation

Sidgwick, Henry. Outlines of the History of Ethics. Macmillan, 1967.

Warning: These citations may not always be 100% accurate.