Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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