Lipsey, R. G., & Steiner, P. O. (1981). Instructor's manual to accompany economics (6th ed.). Harper & Row.
Cita Chicago Style (17a ed.)Lipsey, Richard G., y Peter Otto Steiner. Instructor's Manual to Accompany Economics. 6th ed. New York: Harper & Row, 1981.
Cita MLA (8a ed.)Lipsey, Richard G., y Peter Otto Steiner. Instructor's Manual to Accompany Economics. 6th ed. Harper & Row, 1981.
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