Cita APA (7th ed.)

Bach, D. J., & Leitner, P. J. (2006). Prealgebra: Mathematics for a variable world (3rd ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Bach, Daniel J., i Patricia J. Leitner. Prealgebra: Mathematics for a Variable World. 3rd ed. Boston: McGraw-Hill, 2006.

Cita MLA (9th ed.)

Bach, Daniel J., i Patricia J. Leitner. Prealgebra: Mathematics for a Variable World. 3rd ed. McGraw-Hill, 2006.