APA
American Petroleum Institute A., . (2010). Positive displacement pumps reciprocating. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 2010. Positive displacement pumps reciprocating. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (2010). Positive displacement pumps reciprocating. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Positive displacement pumps reciprocating. Washington: American Petroleum Institute, API. 2010.