Zill, D. G., & Dewar, J. M. (2012). Algebra and trigonometry (Third Edition.). Jones & Bartlett Learning.
Lua i Stíl Chicago (17ú heag.)Zill, Dennis G., agus Jacqueline M. Dewar. Algebra and Trigonometry. Third Edition. Sudbury, MA: Jones & Bartlett Learning, 2012.
Lua MLA (9ú heag.)Zill, Dennis G., agus Jacqueline M. Dewar. Algebra and Trigonometry. Third Edition. Jones & Bartlett Learning, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.