APA (7e ed.) Bronvermelding

Greenlaw, S. A., & Shapiro, D. (2017). Principles of Macroeconomics for AP® Courses 2e. OpenStax.

Chicago (17e ed.) Bronvermelding

Greenlaw, Steven A., en David Shapiro. Principles of Macroeconomics for AP® Courses 2e. [Place of publication not identified]: OpenStax, 2017.

MLA (9e ed.) Bronvermelding

Greenlaw, Steven A., en David Shapiro. Principles of Macroeconomics for AP® Courses 2e. OpenStax, 2017.