APA (7th ed.) Citation

Watson, J. K., Ekelund, R. B. J., & Tollison, R. D. (1991). Study guide to accompany macroeconomics (3rd edition, Robert B. Ekelund, Jr. [and] Robert D. Tollison.). HarperCollins.

Chicago Style (17th ed.) Citation

Watson, John Keith, Robert B. Jr Ekelund, and Robert D. Tollison. Study Guide to Accompany Macroeconomics. 3rd edition, Robert B. Ekelund, Jr. [and] Robert D. Tollison. New York: HarperCollins, 1991.

MLA (9th ed.) Citation

Watson, John Keith, et al. Study Guide to Accompany Macroeconomics. 3rd edition, Robert B. Ekelund, Jr. [and] Robert D. Tollison. HarperCollins, 1991.