APA (7e ed.) Bronvermelding

Não informado. (1970). Viewpoints. Indiana University, School of Education.

Chicago (17e ed.) Bronvermelding

Não informado. Viewpoints. Bloomington, Ind: Indiana University, School of Education, 1970.

MLA (8e ed.) Bronvermelding

Não informado. Viewpoints. Indiana University, School of Education, 1970.

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