APA (7th ed.) Citation

Krugman, P. R., & Wells, R. (2017). Essentials of economics (Fourth edition.). Worth Publishers, Macmillan Learning.

Chicago Style (17th ed.) Citation

Krugman, Paul R., and Robin Wells. Essentials of Economics. Fourth edition. New York: Worth Publishers, Macmillan Learning, 2017.

MLA (9th ed.) Citation

Krugman, Paul R., and Robin Wells. Essentials of Economics. Fourth edition. Worth Publishers, Macmillan Learning, 2017.