Cita APA (7a ed.)

Loucks, W. N. (1957). Comparative economic systems (5th ed.). Harper.

Cita Chicago Style (17a ed.)

Loucks, William N. Comparative Economic Systems. 5th ed. New York: Harper, 1957.

Cita MLA (9a ed.)

Loucks, William N. Comparative Economic Systems. 5th ed. Harper, 1957.