APA

American Petroleum Institute A., . (2008). Methods for testing of solid and rigid centralizers. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2008. Methods for testing of solid and rigid centralizers. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2008). Methods for testing of solid and rigid centralizers. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Methods for testing of solid and rigid centralizers. Washington: American Petroleum Institute, API. 2008.