APA (7th ed.) Citation

Gustafson, R. D., & Frisk, P. D. (2006). Algebra intermedia (7a. ed.). Cengage Learning Editores.

Chicago Style (17th ed.) Citation

Gustafson, R. David, and Peter D. Frisk. Algebra Intermedia. 7a. ed. Ciudad de México: Cengage Learning Editores, 2006.

MLA (9th ed.) Citation

Gustafson, R. David, and Peter D. Frisk. Algebra Intermedia. 7a. ed. Cengage Learning Editores, 2006.