APA استشهاد

Indian Standards Institution. (1980). Sectional list of Indian Standards: : petroleum, coal and related products. Indian Standards Institution.

استشهاد بنمط شيكاغو

Indian Standards Institution. Sectional List of Indian Standards: : Petroleum, Coal and Related Products. N.Delhi: Indian Standards Institution, 1980.

MLA استشهاد

Indian Standards Institution. Sectional List of Indian Standards: : Petroleum, Coal and Related Products. Indian Standards Institution, 1980.