United Nations Interregional Seminar on Petroleum Refining in Developing Countries New Delhi, India, United Nations, & Indian Oil Corporation. (1973). Proceedings of the United Nations Interregional Seminar on Petroleum Refining in Developing Countries, New Delhi, 22 January-3 February 1973. Indian Oil Corporation of the Government of India with the cooperation of the United Nations.
芝加哥风格引文United Nations Interregional Seminar on Petroleum Refining in Developing Countries New Delhi, India, United Nations, 与 Indian Oil Corporation. Proceedings of the United Nations Interregional Seminar on Petroleum Refining in Developing Countries, New Delhi, 22 January-3 February 1973. [India?]: Indian Oil Corporation of the Government of India with the cooperation of the United Nations, 1973.
MLA引文United Nations Interregional Seminar on Petroleum Refining in Developing Countries New Delhi, India, et al. Proceedings of the United Nations Interregional Seminar on Petroleum Refining in Developing Countries, New Delhi, 22 January-3 February 1973. Indian Oil Corporation of the Government of India with the cooperation of the United Nations, 1973.