APA

University of Texas. Petroleum Extension Service, . (1979). Perforación direccional controlada. Austin, Texas: University of Texas.

Chicago

University of Texas. Petroleum Extension Service, . 1979. Perforación direccional controlada. Austin, Texas: University of Texas.

Harvard

University of Texas. Petroleum Extension Service, . (1979). Perforación direccional controlada. Austin, Texas: University of Texas.

MLA

University of Texas. Petroleum Extension Service, . Perforación direccional controlada. Austin, Texas: University of Texas. 1979.