National Council of Applied Economic Research. (1977). Techno-economic survey of Darjeeling tea industry. National Council of Applied Economic Research.
Lua i Stíl Chicago (17ú heag.)National Council of Applied Economic Research. Techno-economic Survey of Darjeeling Tea Industry. New Delhi: National Council of Applied Economic Research, 1977.
Lua MLA (8ú heag.)National Council of Applied Economic Research. Techno-economic Survey of Darjeeling Tea Industry. National Council of Applied Economic Research, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.