Cita APA (7th ed.)

(1977). Positive displacement downhole and motor for rotary drilling rigs installation and maintenance [slaid]. Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin.

Cita Chicago (17th ed.)

Positive Displacement Downhole and Motor for Rotary Drilling Rigs Installation and Maintenance [slaid]. Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin, 1977.

Cita MLA (9th ed.)

Positive Displacement Downhole and Motor for Rotary Drilling Rigs Installation and Maintenance [slaid]. Austin, Tex. : Petroleum Extension Service, The University of Texas at Austin, 1977.