APA

American Petroleum Institute A., . (2004). Recommended practice for centralizer placement and stop collar testing. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2004. Recommended practice for centralizer placement and stop collar testing. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2004). Recommended practice for centralizer placement and stop collar testing. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Recommended practice for centralizer placement and stop collar testing. Washington: American Petroleum Institute, API. 2004.