Cita APA (7th ed.)
Keedy, M. L., & Bittinger, M. L. (1978). Algebra and trigonometry: A functions aproach (2nd ed.). Addison-Wesley Pub. Co..
Cita Chicago (17th ed.)
Keedy, Mervin Laverne, i Marvin L. Bittinger. Algebra and Trigonometry: A Functions Aproach. 2nd ed. Reading, Mass.: Addison-Wesley Pub. Co., 1978.
Cita MLA (9th ed.)
Keedy, Mervin Laverne, i Marvin L. Bittinger. Algebra and Trigonometry: A Functions Aproach. 2nd ed. Addison-Wesley Pub. Co., 1978.
Atenció: Aquestes cites poden no estar 100% correctes.