Cita APA (7th ed.)

Clark, J., & Veseth, M. (1987). Economics: Cost and choice. Harcourt brace.

Cita Chicago (17th ed.)

Clark, J.R, i Michael Veseth. Economics: Cost and Choice. San Diego: Harcourt brace, 1987.

Cita MLA (9th ed.)

Clark, J.R, i Michael Veseth. Economics: Cost and Choice. Harcourt brace, 1987.