Cita APA (7th ed.)

Caplan, G. (1955). Emotional problems of early childhood. Basic Books.

Cita Chicago (17th ed.)

Caplan, Gerald. Emotional Problems of Early Childhood. New York: Basic Books, 1955.

Cita MLA (9th ed.)

Caplan, Gerald. Emotional Problems of Early Childhood. Basic Books, 1955.