APA
International Labour Conference (52 : 1968 : Geneva), . (1969). Record of proceedings. Geneva: International Labour Office.
Chicago
International Labour Conference (52 : 1968 : Geneva), . 1969. Record of proceedings. Geneva: International Labour Office.
Harvard
International Labour Conference (52 : 1968 : Geneva), . (1969). Record of proceedings. Geneva: International Labour Office.
MLA
International Labour Conference (52 : 1968 : Geneva), . Record of proceedings. Geneva: International Labour Office. 1969.