APA (7th ed.) Citation

Mankiw, N. G. (2021). Principles of economics (Ninth edition.). Cengage Learning, Inc..

Chicago Style (17th ed.) Citation

Mankiw, N. Gregory. Principles of Economics. Ninth edition. Boston, MA: Cengage Learning, Inc., 2021.

MLA (8th ed.) Citation

Mankiw, N. Gregory. Principles of Economics. Ninth edition. Cengage Learning, Inc., 2021.