Gustafson,R. David, & Frisk, P. R. (1986). College algebra (3rd ed.). Brookes/Cole.
Lua i Stíl Chicago (17ú heag.)Gustafson,R. David, agus Peter R. Frisk. College Algebra. 3rd ed. California: Brookes/Cole, 1986.
Lua MLA (9ú heag.)Gustafson,R. David, agus Peter R. Frisk. College Algebra. 3rd ed. Brookes/Cole, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.