Gw mau tau Rujukan dari Oil and Natural Gas Corporation. Jelasin dalam bahasa melayu

"UPSTREAM INDIA Fifty Golden Years of ONGC" by ONGC group publications year 2006 is official narrative of history of ONGC.

Story of ONGC by I.A.Farooqi gives a historical account of Oil and Natural Gas Corporation from its foundation to the year 2000.