APA (7e ed.) Bronvermelding

Não informado. (1968). Philosophy and History. Institute for Scientific Co-operation.

Chicago (17e ed.) Bronvermelding

Não informado. Philosophy and History. Tubingen, Alemanha: Institute for Scientific Co-operation, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Philosophy and History. Institute for Scientific Co-operation, 1968.

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