Cita APA (7a ed.)

Sidgwick, H. (1968). The principles of political economy. Bizzarri.

Cita Chicago Style (17a ed.)

Sidgwick, Henry. The Principles of Political Economy. Roma: Bizzarri, 1968.

Cita MLA (9a ed.)

Sidgwick, Henry. The Principles of Political Economy. Bizzarri, 1968.