Citazione Stile APA (7a Edizione)

Bello, I., & Hopf, F. (2006). Intermediate algebra: A real-world approach. Brooks/Cole Pub. Co.

Citazione stile Chigago Style (17a edizione)

Bello, Ignacio, e Fran Hopf. Intermediate Algebra: A Real-world Approach. Pacific Grove: Brooks/Cole Pub. Co, 2006.

Citatione MLA (9a ed.)

Bello, Ignacio, e Fran Hopf. Intermediate Algebra: A Real-world Approach. Brooks/Cole Pub. Co, 2006.