Billstein, R., Libeskind, S., & Lott, J. W. (2000). A problem solving approach to mathematics for elementary school teachers (7th ed.). Addison Wesley Longman.
Citazione stile Chigago Style (17a edizione)Billstein, Rick, Shlomo Libeskind, e Johnny W. Lott. A Problem Solving Approach to Mathematics for Elementary School Teachers. 7th ed. Boston: Addison Wesley Longman, 2000.
Citatione MLA (9a ed.)Billstein, Rick, et al. A Problem Solving Approach to Mathematics for Elementary School Teachers. 7th ed. Addison Wesley Longman, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.