Cita APA (7a ed.)
(1977). Supplement of the Bulletin of Labour Statistics. Bureau International du Travail.
Cita Chicago Style (17a ed.)
Supplement of the Bulletin of Labour Statistics. Genéve: Bureau International du Travail, 1977.
Cita MLA (9a ed.)
Supplement of the Bulletin of Labour Statistics. Bureau International du Travail, 1977.
Precaución: Estas citas no son 100% exactas.