APA
American Petroleum Institute A., . (2013). Safe operation of hydrofluoric acid alkylation units. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 2013. Safe operation of hydrofluoric acid alkylation units. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (2013). Safe operation of hydrofluoric acid alkylation units. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Safe operation of hydrofluoric acid alkylation units. Washington: American Petroleum Institute, API. 2013.