Gardner, R. A. (1973). Understanding children. J. Aronson.
Lua i Stíl Chicago (17ú heag.)Gardner, Richard A. Understanding Children. New York: J. Aronson, 1973.
Lua MLA (8ú heag.)Gardner, Richard A. Understanding Children. J. Aronson, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.