APA (7e ed.) Bronvermelding

Não informado. (1927). Bulletin of the International Bureau of Education. International Bureau of Education.

Chicago (17e ed.) Bronvermelding

Não informado. Bulletin of the International Bureau of Education. Geneve, Suíça: International Bureau of Education, 1927.

MLA (8e ed.) Bronvermelding

Não informado. Bulletin of the International Bureau of Education. International Bureau of Education, 1927.

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