International Labor Office & Marga Institute. (1979). The Informal sector of Colombo City, Sri Lanka: A study. Marga Institute.
Chicagoスタイル(17版)引用形式International Labor Office , Marga Institute. The Informal Sector of Colombo City, Sri Lanka: A Study. Colombo, Sri Lanka: Marga Institute, 1979.
MLA(9版)引用形式International Labor Office , Marga Institute. The Informal Sector of Colombo City, Sri Lanka: A Study. Marga Institute, 1979.
警告: この引用は必ずしも正確ではありません.