Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

Gardner, Bruce D. Development in Early Childhood: The Preschool Years. New York: Happer and Row, 1964.

Cita MLA (9th ed.)

Gardner, Bruce D. Development in Early Childhood: The Preschool Years. Happer and Row, 1964.