Indian Standards Institution. (1980). Sectional list of Indian Standards: : petroleum, coal and related products. Indian Standards Institution.
শিকাগো স্টাইলে সাইটেশনIndian Standards Institution. Sectional List of Indian Standards: : Petroleum, Coal and Related Products. N.Delhi: Indian Standards Institution, 1980.
এমএলএ সাইটেশনIndian Standards Institution. Sectional List of Indian Standards: : Petroleum, Coal and Related Products. Indian Standards Institution, 1980.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.