Billstein, R., Libeskind, S., & Lott, J. W. (2013). A Problem solving approach to mathematics for elementary school teachers (11th ed. ; International ed.). Pearson.
Citazione stile Chigago Style (17a edizione)Billstein, Rick, Shlomo Libeskind, e Johnny W. Lott. A Problem Solving Approach to Mathematics for Elementary School Teachers. 11th ed. ; International ed. Boston: Pearson, 2013.
Citatione MLA (9a ed.)Billstein, Rick, et al. A Problem Solving Approach to Mathematics for Elementary School Teachers. 11th ed. ; International ed. Pearson, 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.