North-East India Council for Social Science Research. (1981). Problems of tea industry in North East India: Papers of a seminar. Research India Publications.
Lua i Stíl Chicago (17ú heag.)North-East India Council for Social Science Research. Problems of Tea Industry in North East India: Papers of a Seminar. Calcutta: Research India Publications, 1981.
Lua MLA (8ú heag.)North-East India Council for Social Science Research. Problems of Tea Industry in North East India: Papers of a Seminar. Research India Publications, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.