Mansfield, E. (1975). Microeconomic problems: Concepts, cases and tests (2nd ed.). Norton.
Cita Chicago (17th ed.)Mansfield, Edwin. Microeconomic Problems: Concepts, Cases and Tests. 2nd ed. New York: Norton, 1975.
Cita MLA (9th ed.)Mansfield, Edwin. Microeconomic Problems: Concepts, Cases and Tests. 2nd ed. Norton, 1975.
Atenció: Aquestes cites poden no estar 100% correctes.