Gaya APA

BELLO, I., HOPF, F. (2006). Intermediate Algebra : A Real-World Approach (ed. 2). New York: McGraw Hill-Higher Education.

Gaya MLA

BELLO, Ignacio., HOPF, Fran. "Intermediate Algebra : A Real-World Approach". ed. 2 New York: McGraw Hill-Higher Education, 2006. Text.