Indian Institute of petroleum. (2010). Indian institute of petroleum: Turns a golden leaf. Indian Institute of petroleum.
Chicago-referens (17:e uppl.)Indian Institute of petroleum. Indian Institute of Petroleum: Turns a Golden Leaf. Dehradun: Indian Institute of petroleum, 2010.
MLA-referens (9:e uppl.)Indian Institute of petroleum. Indian Institute of Petroleum: Turns a Golden Leaf. Indian Institute of petroleum, 2010.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.