APA (7e ed.) Bronvermelding

Não informado. (1964). Education age. Minnesota Mining Manufacturing.

Chicago (17e ed.) Bronvermelding

Não informado. Education Age. Saint Paul, Minn: Minnesota Mining Manufacturing, 1964.

MLA (8e ed.) Bronvermelding

Não informado. Education Age. Minnesota Mining Manufacturing, 1964.

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