Cita APA (7th ed.)

Byrns, R. T., & Stone, G. W. (1981). Economics. Goodyear Pub. Co..

Cita Chicago (17th ed.)

Byrns, Ralph T., i Gerald W. Stone. Economics. Santa Monica, Calif.: Goodyear Pub. Co., 1981.

Cita MLA (8th ed.)

Byrns, Ralph T., i Gerald W. Stone. Economics. Goodyear Pub. Co., 1981.