Steinlage, R. C. (1990). College algebra (3rd ed.). West Pub. Co..
Lua i Stíl Chicago (17ú heag.)Steinlage, Ralph C. College Algebra. 3rd ed. St. Paul, MN: West Pub. Co., 1990.
Lua MLA (9ú heag.)Steinlage, Ralph C. College Algebra. 3rd ed. West Pub. Co., 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.