APA (7e ed.) Bronvermelding

Gardner, D. B. (1964). Development in early childhood: The preschool years. Harper & Row.

Chicago (17e ed.) Bronvermelding

Gardner, David Bruce. Development in Early Childhood: The Preschool Years. New York: Harper & Row, 1964.

MLA (9e ed.) Bronvermelding

Gardner, David Bruce. Development in Early Childhood: The Preschool Years. Harper & Row, 1964.