Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.