Rees, P. K., & Sparks, F. W. (1972). College algebra (6th ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Rees, Paul Klein, agus Fred Winchell Sparks. College Algebra. 6th ed. New York: McGraw-Hill, 1972.
Lua MLA (9ú heag.)Rees, Paul Klein, agus Fred Winchell Sparks. College Algebra. 6th ed. McGraw-Hill, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.