India. Ministry of Petroleum and Natural Gas. (1986). Twenty-eighth report: Committee on public undertakings (1986-87). Lok Sabha.
Chicago Style aipamenaIndia. Ministry of Petroleum and Natural Gas. Twenty-eighth Report: Committee on Public Undertakings (1986-87). New Delhi: Lok Sabha, 1986.
MLA aipamenaIndia. Ministry of Petroleum and Natural Gas. Twenty-eighth Report: Committee on Public Undertakings (1986-87). Lok Sabha, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.