Cita APA (7th ed.)

Sobel, M. A., & Lerner, N. (1983). Algebra and trigonometry: A pre-calculus approach (2nd ed.). Prentice-Hall.

Cita Chicago (17th ed.)

Sobel, Max A., i Norbert Lerner. Algebra and Trigonometry: A Pre-calculus Approach. 2nd ed. Englewood Cliffs, N. J: Prentice-Hall, 1983.

Cita MLA (9th ed.)

Sobel, Max A., i Norbert Lerner. Algebra and Trigonometry: A Pre-calculus Approach. 2nd ed. Prentice-Hall, 1983.