APA
American Petroleum Institute A., . (1999). Technical Report on fire resistance improvements for API flanges. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 1999. Technical Report on fire resistance improvements for API flanges. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (1999). Technical Report on fire resistance improvements for API flanges. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Technical Report on fire resistance improvements for API flanges. Washington: American Petroleum Institute, API. 1999.