Keedy, M. L., & Bittinger, M. L. (1978). Algebra and trigonometry: A functions aproach (2nd ed.). Addison-Wesley Pub. Co..
Lua i Stíl Chicago (17ú heag.)Keedy, Mervin Laverne, agus Marvin L. Bittinger. Algebra and Trigonometry: A Functions Aproach. 2nd ed. Reading, Mass.: Addison-Wesley Pub. Co., 1978.
Lua MLA (9ú heag.)Keedy, Mervin Laverne, agus Marvin L. Bittinger. Algebra and Trigonometry: A Functions Aproach. 2nd ed. Addison-Wesley Pub. Co., 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.