Cita APA (7a ed.)

James, C. L. (1960). Principles of economics (9th. ed.). Barnes & Noble.

Cita Chicago Style (17a ed.)

James, Clifford L. Principles of Economics. 9th. ed. New York: Barnes & Noble, 1960.

Cita MLA (8a ed.)

James, Clifford L. Principles of Economics. 9th. ed. Barnes & Noble, 1960.