APA (7e ed.) Bronvermelding

Não informado. (1969). Developmental Psychology. American Psychological Association.

Chicago (17e ed.) Bronvermelding

Não informado. Developmental Psychology. Washington: American Psychological Association, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Developmental Psychology. American Psychological Association, 1969.

Let op: Deze citaties zijn niet altijd 100% accuraat.