India. Ministry of Energy. Department of Coal. (1980). Committee on public undertakings (1980-81): Seventeenth report on coal India limited. Lok Sabha.
শিকাগো স্টাইলে সাইটেশনIndia. Ministry of Energy. Department of Coal. Committee on Public Undertakings (1980-81): Seventeenth Report on Coal India Limited. New Delhi: Lok Sabha, 1980.
এমএলএ সাইটেশনIndia. Ministry of Energy. Department of Coal. Committee on Public Undertakings (1980-81): Seventeenth Report on Coal India Limited. Lok Sabha, 1980.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.