Cita APA (7th ed.)

Boyes, W. J., & Melvin, M. (1991). Economics. Houghton Mifflin.

Cita Chicago (17th ed.)

Boyes, William J., i Michael Melvin. Economics. Boston: Houghton Mifflin, 1991.

Cita MLA (8th ed.)

Boyes, William J., i Michael Melvin. Economics. Houghton Mifflin, 1991.