Cohen, D. (1992). College algebra (3rd ed.). West Publishing Co.
Lua i Stíl Chicago (17ú heag.)Cohen, David. College Algebra. 3rd ed. New York: West Publishing Co, 1992.
Lua MLA (9ú heag.)Cohen, David. College Algebra. 3rd ed. West Publishing Co, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.