APA (7th ed.) Citation

Greenlaw, S. A., Shapiro, D. A., & Taylor, T. a. (2017). Principles of Economics: Second edition (2e.). OpenStax.

Chicago Style (17th ed.) Citation

Greenlaw, Steven A., David A. Shapiro, and Timothy author Taylor. Principles of Economics: Second Edition. 2e. [Place of publication not identified]: OpenStax, 2017.

MLA (9th ed.) Citation

Greenlaw, Steven A., et al. Principles of Economics: Second Edition. 2e. OpenStax, 2017.