APA

yuan H. C., Hanseng Q., China National Oil, World Petroleum Congress (11th. : 1983 : London), Hanseng Q. & China National Oil.Characteristics of oil and gas distribution in the North China basin and the adjacent seas. : .

Chicago

yuan Hu Chao, Hanseng Quiao, China National Oil, World Petroleum Congress (11th. : 1983 : London), Hanseng Quiao and China National Oil.Characteristics of oil and gas distribution in the North China basin and the adjacent seas. : .

Harvard

yuan H. C., Hanseng Q., China National Oil, World Petroleum Congress (11th. : 1983 : London), Hanseng Q. and China National Oil.Characteristics of oil and gas distribution in the North China basin and the adjacent seas. : .

MLA

yuan Hu Chao, Hanseng Quiao, China National Oil, World Petroleum Congress (11th. : 1983 : London), Hanseng Quiao and China National Oil.: . .