Παραπομπή APA

Zill,Dennis G, & Dewar,Jacqueline M. (2007). Precalculus with calculus previews (4th ed.). Jones and Bartlett.

Παραπομπή Chicago Style

Zill,Dennis G, και Dewar,Jacqueline M. Precalculus with Calculus Previews. 4th ed. Boston: Jones and Bartlett, 2007.

Παραπομπή MLA

Zill,Dennis G, και Dewar,Jacqueline M. Precalculus with Calculus Previews. 4th ed. Jones and Bartlett, 2007.