APA (7e ed.) Bronvermelding

Spencer, M. H., & Amos, O. M. (1993). Contemporary microeconomics (8th ed.). Worth Publishers.

Chicago (17e ed.) Bronvermelding

Spencer, Milton H., en Orley M. Amos. Contemporary Microeconomics. 8th ed. New York, N.Y.: Worth Publishers, 1993.

MLA (8e ed.) Bronvermelding

Spencer, Milton H., en Orley M. Amos. Contemporary Microeconomics. 8th ed. Worth Publishers, 1993.