APA (7th ed.) Citation

Sidgwick, H. (1969). The principles of political economy (3d ed.). Kraus Reprint.

Chicago Style (17th ed.) Citation

Sidgwick, Henry. The Principles of Political Economy. 3d ed. New York: Kraus Reprint, 1969.

MLA (9th ed.) Citation

Sidgwick, Henry. The Principles of Political Economy. 3d ed. Kraus Reprint, 1969.