Cita APA (7th ed.)

Bello, I. (1998). Elementary algebra. Brooks/Cole Publishing Company.

Cita Chicago (17th ed.)

Bello, Ignacio. Elementary Algebra. Pacific Grove: Brooks/Cole Publishing Company, 1998.

Cita MLA (9th ed.)

Bello, Ignacio. Elementary Algebra. Brooks/Cole Publishing Company, 1998.