International Labour Conference (1967). (1967). Report of the Director General: International Labour Conference Session 51 Report 1 Part 2. International Labour Office.
Chicago-tyylinen lähdeviittausInternational Labour Conference (1967). Report of the Director General: International Labour Conference Session 51 Report 1 Part 2. Geneva: International Labour Office, 1967.
MLA-viiteInternational Labour Conference (1967). Report of the Director General: International Labour Conference Session 51 Report 1 Part 2. International Labour Office, 1967.
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