1. Annual Administration Report by the Controller of Labour (AARCOL) for 1925–1938. Ceylon: H. Ross Cottle Government Printer, National Archives of India (NAI).
2. Annual Report of the Agent of Government of India (ARAGOIC) on the working of Indian Emigration Act 1922, the rules issued thereunder and of the Labour Ordinances of Ceylon, 1923–1939. Calcutta: GOI Central Publication Branch, NAI.
3. Chattopadhyaya, H.P. Indians In Sri Lanka: A Historical Study. Calcutta: O.P.S Publishers, 1979.
4. Heidemann, Frank. Kanganies in Sri Lanka and Malaysia: Tamil Recruiter cum foreman as a sociological category in the Nineteenth Century. (Munchen: Anacon, 1992)
5. Jackson, Edward. Report of a Commission on Immigration into Ceylon. April 1938. NAI.