APA (7th ed.) Citation

Sidgwick, H. (1896). Outlines of the history of ethics for English readers (4th ed.). Macmillan.

Chicago Style (17th ed.) Citation

Sidgwick, Henry. Outlines of the History of Ethics for English Readers. 4th ed. London ; New York: Macmillan, 1896.

MLA (9th ed.) Citation

Sidgwick, Henry. Outlines of the History of Ethics for English Readers. 4th ed. Macmillan, 1896.