APA (7e ed.) Bronvermelding

Não informado. (1977). Core: Collected original resources in education. Carfax Publishing.

Chicago (17e ed.) Bronvermelding

Não informado. Core: Collected Original Resources in Education. Oxford, Inglaterra: Carfax Publishing, 1977.

MLA (8e ed.) Bronvermelding

Não informado. Core: Collected Original Resources in Education. Carfax Publishing, 1977.

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