Cita APA (7th ed.)

Bingham, R. C. (1981). Economic concepts: A programmed approach (6th ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Bingham, Robert C. Economic Concepts: A Programmed Approach. 6th ed. New York: McGraw-Hill, 1981.

Cita MLA (9th ed.)

Bingham, Robert C. Economic Concepts: A Programmed Approach. 6th ed. McGraw-Hill, 1981.