Gaya APA

Bach, D., Leitner, P, J. (). Prealgebra : mathematics for a variable world / Daniel Bach (Cet.3 ed.). New York: Mc Graw-Hill Companies.

Gaya MLA

Bach, Daniel., Leitner, Patricia, J.. "Prealgebra : mathematics for a variable world / Daniel Bach". Cet.3 ed. New York: Mc Graw-Hill Companies, . Buku.