APA (7e ed.) Bronvermelding

Não informado. (1969). Perspectives. Association for General and Liberal Studies.

Chicago (17e ed.) Bronvermelding

Não informado. Perspectives. Kalamazoo, Mich: Association for General and Liberal Studies, 1969.

MLA (8e ed.) Bronvermelding

Não informado. Perspectives. Association for General and Liberal Studies, 1969.

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