Cita APA (7th ed.)

Spencer, M. H. (1977). Contemporary microeconomics (3rd ed.). Worth.

Cita Chicago (17th ed.)

Spencer, Milton H. Contemporary Microeconomics. 3rd ed. New York: Worth, 1977.

Cita MLA (9th ed.)

Spencer, Milton H. Contemporary Microeconomics. 3rd ed. Worth, 1977.