Citazione Stile APA (7a Edizione)

Swokowski, E. W. (1990). Precalculus functions and graphs (6th ed.). PWS-Kent.

Citazione stile Chigago Style (17a edizione)

Swokowski, Earl W. Precalculus Functions and Graphs. 6th ed. Boston: PWS-Kent, 1990.

Citatione MLA (9a ed.)

Swokowski, Earl W. Precalculus Functions and Graphs. 6th ed. PWS-Kent, 1990.