Cita APA (7th ed.)

Loucks, W. N. (1961). Comparative economic systems (6th ed.). Harper.

Cita Chicago (17th ed.)

Loucks, William Negele. Comparative Economic Systems. 6th ed. New York: Harper, 1961.

Cita MLA (9th ed.)

Loucks, William Negele. Comparative Economic Systems. 6th ed. Harper, 1961.