APA

American Petroleum Institute A., . (2013). In-line inspection systems qualification. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2013. In-line inspection systems qualification. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2013). In-line inspection systems qualification. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . In-line inspection systems qualification. Washington: American Petroleum Institute, API. 2013.