APA Edition Citation

Ashock, R. B., Engelhardt, J. M., & Wiebe, J. H. (1984). Helping Children Understand and use Numerals.

Chicago Edition Citation

Ashock, Robert B., Jon M. Engelhardt, and James H. Wiebe. Helping Children Understand and Use Numerals. Boston, Allyn and Bacon, 1984.

MLA Edition Citation

Ashock, Robert B., et al. Helping Children Understand and Use Numerals. 1984.