International Labour Conference (1971). (1971). Report of the Director General: International Labour Conference Session 56 Report 1 Part 1 Freedom by dialogue - Economic development by social progress - The ILO contribution. International Labour Office.
শিকাগো স্টাইলে সাইটেশনInternational Labour Conference (1971). Report of the Director General: International Labour Conference Session 56 Report 1 Part 1 Freedom by Dialogue - Economic Development by Social Progress - The ILO Contribution. Geneva: International Labour Office, 1971.
এমএলএ সাইটেশনInternational Labour Conference (1971). Report of the Director General: International Labour Conference Session 56 Report 1 Part 1 Freedom by Dialogue - Economic Development by Social Progress - The ILO Contribution. International Labour Office, 1971.