APA (7th ed.) Citation

Willis, A. T., Johnston, C. L., & Buhr, B. (1991). Intermediate algebra (Third edition.). Wadsworth Pub. Co.

Chicago Style (17th ed.) Citation

Willis, Alden T., C. L. Johnston, and Barbara Buhr. Intermediate Algebra. Third edition. Belmont, Calif: Wadsworth Pub. Co, 1991.

MLA (9th ed.) Citation

Willis, Alden T., et al. Intermediate Algebra. Third edition. Wadsworth Pub. Co, 1991.