APA (7th ed.) Citation

Halperin, E. P. (1971). Imitation in children. University of Chicago.

Chicago Style (17th ed.) Citation

Halperin, Elaine P. Imitation in Children. London: University of Chicago, 1971.

MLA (9th ed.) Citation

Halperin, Elaine P. Imitation in Children. University of Chicago, 1971.