Hatfield, M. M., Bitter, G. G., & Edwards, N. T. (1993). Mathematics methods for the elementary and middle school (2nd ed.). Allyn and Bacon.
Dyfyniad Arddull ChicagoHatfield, Mary M., Gary G. Bitter, and Nancy Tanner Edwards. Mathematics Methods for the Elementary and Middle School. 2nd ed. Boston: Allyn and Bacon, 1993.
Dyfyniad MLAHatfield, Mary M., et al. Mathematics Methods for the Elementary and Middle School. 2nd ed. Allyn and Bacon, 1993.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.