Wanigaratne, R. D. (1975). A study of communication flow in selected villages in Sri Lanka: Case study. Agrarian Research and Training Institute.
Chicago-referens (17:e uppl.)Wanigaratne, R. D. A Study of Communication Flow in Selected Villages in Sri Lanka: Case Study. Colombo: Agrarian Research and Training Institute, 1975.
MLA-referens (8:e uppl.)Wanigaratne, R. D. A Study of Communication Flow in Selected Villages in Sri Lanka: Case Study. Agrarian Research and Training Institute, 1975.
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