APA (7th ed.) Citation

Sidgwick, H. (1993). Outlines of the history of ethics (Reprint of the 1886 ed.). Thoemmes Press.

Chicago Style (17th ed.) Citation

Sidgwick, Henry. Outlines of the History of Ethics. Reprint of the 1886 ed. Bristol: Thoemmes Press, 1993.

MLA (9th ed.) Citation

Sidgwick, Henry. Outlines of the History of Ethics. Reprint of the 1886 ed. Thoemmes Press, 1993.