APA

American Petroleum Institute A., . (1994). Positive displacement pumps controlled volume. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1994. Positive displacement pumps controlled volume. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1994). Positive displacement pumps controlled volume. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Positive displacement pumps controlled volume. Washington: American Petroleum Institute, API. 1994.