APA (7th ed.) Citation

Herman, E., & Strang, G. (2016). Calculus. OpenStax, Rice University.

Chicago Style (17th ed.) Citation

Herman, Edwin, and Gilbert Strang. Calculus. Houston, Texas: OpenStax, Rice University, 2016.

MLA (9th ed.) Citation

Herman, Edwin, and Gilbert Strang. Calculus. OpenStax, Rice University, 2016.