Lua APA (7ú heag.)
Halperin, E. P. (1971). Imitation in children. University of Chicago.
Lua i Stíl Chicago (17ú heag.)
Halperin, Elaine P. Imitation in Children. London: University of Chicago, 1971.
Lua MLA (9ú heag.)
Halperin, Elaine P. Imitation in Children. University of Chicago, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.