APA (7th ed.) Citation

Lipsey, R. G., Steiner, O., & Purvis, D. (1990). Economics (9th ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Lipsey, Richard G., O. Steiner, and Douglas Purvis. Economics. 9th ed. New York: Harper & Row, 1990.

MLA (9th ed.) Citation

Lipsey, Richard G., et al. Economics. 9th ed. Harper & Row, 1990.