APA
American Petroleum Institute A., . (2015). Industrial fired boilers for general refinery and petrochemical service. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 2015. Industrial fired boilers for general refinery and petrochemical service. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (2015). Industrial fired boilers for general refinery and petrochemical service. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Industrial fired boilers for general refinery and petrochemical service. Washington: American Petroleum Institute, API. 2015.