APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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