एपीए उद्धरण

India. Ministry of Energy. Department of Coal. (1980). Committee on public undertakings (1980-81): Seventeenth report on coal India limited. Lok Sabha.

शिकागो स्टाइल उद्धरण

India. Ministry of Energy. Department of Coal. Committee on Public Undertakings (1980-81): Seventeenth Report on Coal India Limited. New Delhi: Lok Sabha, 1980.

एमएलए उद्धरण

India. Ministry of Energy. Department of Coal. Committee on Public Undertakings (1980-81): Seventeenth Report on Coal India Limited. Lok Sabha, 1980.