APA

American Petroleum Institute A., . (2006). 2004 survey on petroleum industry occupational injuries, illnesses, and fatalities summary report: aggregate data only. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2006. 2004 survey on petroleum industry occupational injuries, illnesses, and fatalities summary report: aggregate data only. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2006). 2004 survey on petroleum industry occupational injuries, illnesses, and fatalities summary report: aggregate data only. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . 2004 survey on petroleum industry occupational injuries, illnesses, and fatalities summary report: aggregate data only. Washington: American Petroleum Institute, API. 2006.