APA (7th ed.) Citation

Hartup, W. W., & Smothergill, N. L. (1967). The young child: Reviews of research. National Association for the Education of Young Children.

Chicago Style (17th ed.) Citation

Hartup, Williard W., and Nancy L. Smothergill. The Young Child: Reviews of Research. Washington: National Association for the Education of Young Children, 1967.

MLA (9th ed.) Citation

Hartup, Williard W., and Nancy L. Smothergill. The Young Child: Reviews of Research. National Association for the Education of Young Children, 1967.