1. General Assembly Official Records [4th session], Second Committee, p. 147–148)
2. Economic and Social Council Official Records [9th session], p. 779–782
3. International Labor Organization, International Labour Conference [40th session], Report IV [1], Forced Labour, p. 3–22
4. Economic and Social Council Official Records (12th session), p. 310
5. Economic and Social Council Official Records [8th session], p. 464