APA (7th ed.) Citation

Hartman, G., Heinold, B., Siemers, T., Chalishajar, D., & Bowen, J. (2014). APEX Calculus. APEX Calculus.

Chicago Style (17th ed.) Citation

Hartman, Gregory, Brian Heinold, Troy Siemers, Dimplekumar Chalishajar, and Jennifer Bowen. APEX Calculus. [Place of publication not identified]: APEX Calculus, 2014.

MLA (9th ed.) Citation

Hartman, Gregory, et al. APEX Calculus. APEX Calculus, 2014.