Cita APA (7th ed.)

LONGSTRETH, L. E. (1968). Psychological development of the child. The Ronald press co.

Cita Chicago (17th ed.)

LONGSTRETH, Langdon E. Psychological Development of the Child. New York: The Ronald press co, 1968.

Cita MLA (9th ed.)

LONGSTRETH, Langdon E. Psychological Development of the Child. The Ronald press co, 1968.