Bittinger, M. L., & Beecher, J. A. (1989). Algebra and trigonometry. Addison-Wesley.
Lua i Stíl Chicago (17ú heag.)Bittinger, Marvin L., agus Judith A. Beecher. Algebra and Trigonometry. Massachusetts: Addison-Wesley, 1989.
Lua MLA (9ú heag.)Bittinger, Marvin L., agus Judith A. Beecher. Algebra and Trigonometry. Addison-Wesley, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.