APA (7e ed.) Bronvermelding

Não informado. (1959). Psychological Issues. International Universities.

Chicago (17e ed.) Bronvermelding

Não informado. Psychological Issues. New York: International Universities, 1959.

MLA (8e ed.) Bronvermelding

Não informado. Psychological Issues. International Universities, 1959.

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