APA-referens (7:e uppl.)
Gardner, B. D. (1964). Development in early childhood: The preschool years. Happer and Row.
Chicago-referens (17:e uppl.)
Gardner, Bruce D. Development in Early Childhood: The Preschool Years. New York: Happer and Row, 1964.
MLA-referens (9:e uppl.)
Gardner, Bruce D. Development in Early Childhood: The Preschool Years. Happer and Row, 1964.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.