APA

American Petroleum Institute A., National Petrochemical & Refiners Association N. & National Petrochemical & Refiners Association N. (2003). Security vulnerability assessment methodology for the petroleum and petrochemical industries. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, National Petrochemical & Refiners Association NPRA and National Petrochemical & Refiners Association NPRA. 2003. Security vulnerability assessment methodology for the petroleum and petrochemical industries. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., National Petrochemical & Refiners Association N. and National Petrochemical & Refiners Association N. (2003). Security vulnerability assessment methodology for the petroleum and petrochemical industries. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, National Petrochemical & Refiners Association NPRA and National Petrochemical & Refiners Association NPRA. Security vulnerability assessment methodology for the petroleum and petrochemical industries. Washington: American Petroleum Institute, API. 2003.