APA (7e ed.) Bronvermelding

Não informado. (1974). Special Education. National Council for Special Education.

Chicago (17e ed.) Bronvermelding

Não informado. Special Education. London: National Council for Special Education, 1974.

MLA (8e ed.) Bronvermelding

Não informado. Special Education. National Council for Special Education, 1974.

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