Citazione Stile APA (7a Edizione)

Swokowski, E. W. (2012). Precalculus: Functions and graphs (Twelfth edition.). Brooks/Cole Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Swokowski, Earl W. Precalculus: Functions and Graphs. Twelfth edition. Australia: Brooks/Cole Cengage Learning, 2012.

Citatione MLA (9a ed.)

Swokowski, Earl W. Precalculus: Functions and Graphs. Twelfth edition. Brooks/Cole Cengage Learning, 2012.