APA

American Petroleum Institute A., . (2009). Safe use of 2-inch hammer unions for oilfield applications. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2009. Safe use of 2-inch hammer unions for oilfield applications. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2009). Safe use of 2-inch hammer unions for oilfield applications. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Safe use of 2-inch hammer unions for oilfield applications. Washington: American Petroleum Institute, API. 2009.