APA (7e ed.) Bronvermelding

Não informado. (1964). Labour Education. International Labour Office.

Chicago (17e ed.) Bronvermelding

Não informado. Labour Education. Geneva, Suíça: International Labour Office, 1964.

MLA (8e ed.) Bronvermelding

Não informado. Labour Education. International Labour Office, 1964.

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