APA (7e ed.) Bronvermelding

Não informado. (1927). Publications du Bureau International d'Education. Bureau International d' Education.

Chicago (17e ed.) Bronvermelding

Não informado. Publications Du Bureau International D'Education. Geneva, Suíça: Bureau International d' Education, 1927.

MLA (8e ed.) Bronvermelding

Não informado. Publications Du Bureau International D'Education. Bureau International d' Education, 1927.

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