National Council of Applied Economic Research. (1977). Techno-economic survey of Darjeeling tea industry. National Council of Applied Economic Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Council of Applied Economic Research. Techno-economic Survey of Darjeeling Tea Industry. New Delhi: National Council of Applied Economic Research, 1977.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Council of Applied Economic Research. Techno-economic Survey of Darjeeling Tea Industry. National Council of Applied Economic Research, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.