Sheffield, L. J., & Cruikshank, D. E. (2000). Teaching and Learning Elementary and Middle School Mathematics (4th ed.). [kn]: John Wiley and Sons.
Citación estilo ChicagoSheffield, Linda Jensen., y Douglas E. Cruikshank. Teaching and Learning Elementary and Middle School Mathematics. 4th ed. [kn]: John Wiley and Sons, 2000.
Cita MLASheffield, Linda Jensen., y Douglas E. Cruikshank. Teaching and Learning Elementary and Middle School Mathematics. 4th ed. [kn]: John Wiley and Sons, 2000.
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