International Labour Office. (1971). Worker's education discussion methods on population and family planning questions. International Labour Office.
Chicago-referens (17:e uppl.)International Labour Office. Worker's Education Discussion Methods on Population and Family Planning Questions. Geneva: International Labour Office, 1971.
MLA-referens (9:e uppl.)International Labour Office. Worker's Education Discussion Methods on Population and Family Planning Questions. International Labour Office, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.