APA

American Petroleum Institute A., . (2008). Selection of centralizers for primary cementing operations. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2008. Selection of centralizers for primary cementing operations. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2008). Selection of centralizers for primary cementing operations. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Selection of centralizers for primary cementing operations. Washington: American Petroleum Institute, API. 2008.