Gaya APA

Bello, I., Hopf, F. (1997). Intermediate Algebra: A Real -World Approach (2). Toronto: McGraw-Hill Higher Education.

Gaya MLA

Bello, Ignacio., Hopf, Fran. "Intermediate Algebra: A Real -World Approach". 2 Toronto: McGraw-Hill Higher Education, 1997. Text.