Bach, D. J., & Leitner, P. J. (2006). Prealgebra: Mathematics for a variable world (3rd ed.). McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Bach, Daniel J., agus Patricia J. Leitner. Prealgebra: Mathematics for a Variable World. 3rd ed. Boston: McGraw-Hill, 2006.
Lua MLA (9ú heag.)Bach, Daniel J., agus Patricia J. Leitner. Prealgebra: Mathematics for a Variable World. 3rd ed. McGraw-Hill, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.