APA (7e ed.) Bronvermelding

International Labour Office. (1973). Cooperative chronology. International Labour Office.

Chicago (17e ed.) Bronvermelding

International Labour Office. Cooperative Chronology. Geneva, Switzerland: International Labour Office, 1973.

MLA (8e ed.) Bronvermelding

International Labour Office. Cooperative Chronology. International Labour Office, 1973.

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