APA aipamena

India. Dept. of Petroleum. (1981). Annual report. Govt. of India, Ministry of Petroleum, Chemicals, and Fertilizers, Dept. of Petroleum.

Chicago Style aipamena

India. Dept. of Petroleum. Annual Report. New Delhi: Govt. of India, Ministry of Petroleum, Chemicals, and Fertilizers, Dept. of Petroleum, 1981.

MLA aipamena

India. Dept. of Petroleum. Annual Report. Govt. of India, Ministry of Petroleum, Chemicals, and Fertilizers, Dept. of Petroleum, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.