APA-referens (7:e uppl.)

Sullivan, M., & Sullivan, M. 1. J. 2. (2003). Precalculus: Enhanced with graphing utilities (3rd ed.). Prentice Hall.

Chicago-referens (17:e uppl.)

Sullivan, Michael, och Michael 1967 July 2- Sullivan. Precalculus: Enhanced with Graphing Utilities. 3rd ed. Upper Saddle River, N.J: Prentice Hall, 2003.

MLA-referens (9:e uppl.)

Sullivan, Michael, och Michael 1967 July 2- Sullivan. Precalculus: Enhanced with Graphing Utilities. 3rd ed. Prentice Hall, 2003.