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শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিIndia. Ministry of Petroleum and Chemicals. Economics & Statistics Division. Indian Petroleum & Petrochemicals Statistics. New Delhi: Economics & Statistics Division, Ministry of Petroleum and Chemicals, Government of India.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিIndia. Ministry of Petroleum and Chemicals. Economics & Statistics Division. Indian Petroleum & Petrochemicals Statistics. Economics & Statistics Division, Ministry of Petroleum and Chemicals, Government of India.
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