APA (7e ed.) Bronvermelding

Longstreth, L. E. (1974). Psychological development of the child (2d ed.). Ronald Press Co.

Chicago (17e ed.) Bronvermelding

Longstreth, Langdon E. Psychological Development of the Child. 2d ed. New York: Ronald Press Co, 1974.

MLA (9e ed.) Bronvermelding

Longstreth, Langdon E. Psychological Development of the Child. 2d ed. Ronald Press Co, 1974.