APA (7e ed.) Bronvermelding

Não informado. (1968). Educational Studies in Mathematics. D. Reidel Publishing.

Chicago (17e ed.) Bronvermelding

Não informado. Educational Studies in Mathematics. Dordrecht, Holanda: D. Reidel Publishing, 1968.

MLA (8e ed.) Bronvermelding

Não informado. Educational Studies in Mathematics. D. Reidel Publishing, 1968.

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