Cita APA (7th ed.)

Lipsey, R. G., Purvis, D. D., & Steiner, P. O. (1987). Economics (8th ed.). Harper & Row.

Cita Chicago (17th ed.)

Lipsey, Richard G., Douglas D. Purvis, i Peter Otto Steiner. Economics. 8th ed. New York: Harper & Row, 1987.

Cita MLA (9th ed.)

Lipsey, Richard G., et al. Economics. 8th ed. Harper & Row, 1987.