APA (7th ed.) Citation

Sidgwick, H. (1887). The principles of political economy (2. ed.). Macmillan.

Chicago Style (17th ed.) Citation

Sidgwick, Henry. The Principles of Political Economy. 2. ed. London: Macmillan, 1887.

MLA (8th ed.) Citation

Sidgwick, Henry. The Principles of Political Economy. 2. ed. Macmillan, 1887.