APA

Tao X., Zeng Y., Qin H., Petroleum Drilling Research Institute (China), World Petroleum Congress (15th. : 1997 : Beijing), Zeng Y., Qin H. & Petroleum Drilling Research Institute (China).Impact rotary drilling technology. : .

Chicago

Tao Xinghua, Zeng Yijin, Qin Hongxiang, Petroleum Drilling Research Institute (China), World Petroleum Congress (15th. : 1997 : Beijing), Zeng Yijin, Qin Hongxiang and Petroleum Drilling Research Institute (China).Impact rotary drilling technology. : .

Harvard

Tao X., Zeng Y., Qin H., Petroleum Drilling Research Institute (China), World Petroleum Congress (15th. : 1997 : Beijing), Zeng Y., Qin H. and Petroleum Drilling Research Institute (China).Impact rotary drilling technology. : .

MLA

Tao Xinghua, Zeng Yijin, Qin Hongxiang, Petroleum Drilling Research Institute (China), World Petroleum Congress (15th. : 1997 : Beijing), Zeng Yijin, Qin Hongxiang and Petroleum Drilling Research Institute (China).: . .