Cita APA (7a ed.)

Keedy, M. L., & Brittinger, M. L. (1990). Instructor's resourcen guide: Algebra and trigonometry (5th. ed.). Addison-Wesley.

Cita Chicago Style (17a ed.)

Keedy, Mervin L., y Marvin L. Brittinger. Instructor's Resourcen Guide: Algebra and Trigonometry. 5th. ed. New York: Addison-Wesley, 1990.

Cita MLA (8a ed.)

Keedy, Mervin L., y Marvin L. Brittinger. Instructor's Resourcen Guide: Algebra and Trigonometry. 5th. ed. Addison-Wesley, 1990.