APA (7th ed.) Citation

Forbush, D. R., Lipsey, R. G., Steiner, P. O., & Menz, F. C. (1981). Economics (6th ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Forbush, Dascomb R., Richard G. Lipsey, Peter O. Steiner, and Fredric C. Menz. Economics. 6th ed. New York: Harper & Row, 1981.

MLA (9th ed.) Citation

Forbush, Dascomb R., et al. Economics. 6th ed. Harper & Row, 1981.