APA (7th ed.) Citation

Singer, R. D., & Harris, A. S. (1969). Psychological development in children. Saunders.

Chicago Style (17th ed.) Citation

Singer, Robert D., and Anne Singer Harris. Psychological Development in Children. Philadelphia: Saunders, 1969.

MLA (9th ed.) Citation

Singer, Robert D., and Anne Singer Harris. Psychological Development in Children. Saunders, 1969.