APA (7th ed.) Citation

Sobel, M. A., & Lerner, N. (1991). Algebra and trigonometry (4th ed.). Prentice hall.

Chicago Style (17th ed.) Citation

Sobel, Max A., and Norbert Lerner. Algebra and Trigonometry. 4th ed. Englewood cliffs: Prentice hall, 1991.

MLA (9th ed.) Citation

Sobel, Max A., and Norbert Lerner. Algebra and Trigonometry. 4th ed. Prentice hall, 1991.