Cita APA (7th ed.)

Billstein, R., Libeskind, S., & Lott, J. W. (1997). A problem-solving approach to mathematics for elementary school teachers (6th ed.). Addison-Wesley.

Cita Chicago (17th ed.)

Billstein, Rick, Shlomo Libeskind, i Johnny W. Lott. A Problem-solving Approach to Mathematics for Elementary School Teachers. 6th ed. Reading, MA: Addison-Wesley, 1997.

Cita MLA (9th ed.)

Billstein, Rick, et al. A Problem-solving Approach to Mathematics for Elementary School Teachers. 6th ed. Addison-Wesley, 1997.