APA (7e ed.) Bronvermelding

Plant, J. S. (1950). The envelope: A study of the impact of the world upon the child. Commonwealth Fund.

Chicago (17e ed.) Bronvermelding

Plant, James Stuart. The Envelope: A Study of the Impact of the World upon the Child. New York: Commonwealth Fund, 1950.

MLA (9e ed.) Bronvermelding

Plant, James Stuart. The Envelope: A Study of the Impact of the World upon the Child. Commonwealth Fund, 1950.