Boyes, W., & Melvin, M. (1991). Microeconomics. Houghton Mifflin.
Cita Chicago (17th ed.)Boyes, William, i Michael Melvin. Microeconomics. Boston: Houghton Mifflin, 1991.
Cita MLA (9th ed.)Boyes, William, i Michael Melvin. Microeconomics. Houghton Mifflin, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.