APA
American Petroleum Institute A., . (1980). Ultra high-test heat treated line pipe. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 1980. Ultra high-test heat treated line pipe. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (1980). Ultra high-test heat treated line pipe. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Ultra high-test heat treated line pipe. Washington: American Petroleum Institute, API. 1980.