APA

American Petroleum Institute A., . (2008). Technical report on electric motor prime mover for beam pumping unit service. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2008. Technical report on electric motor prime mover for beam pumping unit service. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2008). Technical report on electric motor prime mover for beam pumping unit service. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Technical report on electric motor prime mover for beam pumping unit service. Washington: American Petroleum Institute, API. 2008.