APA-referens (7:e uppl.)

Bittinger, M. L. (2009). Precalculus: Graphs & models (4th edition.). Pearson/Addison Wesley.

Chicago-referens (17:e uppl.)

Bittinger, Marvin L. Precalculus: Graphs & Models. 4th edition. Boston: Pearson/Addison Wesley, 2009.

MLA-referens (9:e uppl.)

Bittinger, Marvin L. Precalculus: Graphs & Models. 4th edition. Pearson/Addison Wesley, 2009.