Cita APA (7th ed.)

Hatfield, M. M., Bitter, G. G., & Edwards, N. T. (1993). Mathematics methods for the elementary and middle school (2nd ed.). Allyn and Bacon.

Cita Chicago (17th ed.)

Hatfield, Mary M., Gary G. Bitter, i Nancy Tanner Edwards. Mathematics Methods for the Elementary and Middle School. 2nd ed. Boston: Allyn and Bacon, 1993.

Cita MLA (9th ed.)

Hatfield, Mary M., et al. Mathematics Methods for the Elementary and Middle School. 2nd ed. Allyn and Bacon, 1993.