Lipsey, R. G., Steiner, P. O., & Purvis, D. D. (1984). Economics (Seventh edition.). Harper & Row.
Cita Chicago Style (17a ed.)Lipsey, Richard G., Peter Otto Steiner, y Douglas D. Purvis. Economics. Seventh edition. New York: Harper & Row, 1984.
Cita MLA (8a ed.)Lipsey, Richard G., et al. Economics. Seventh edition. Harper & Row, 1984.
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