APA

American Petroleum Institute A., . (2001). Risk - based methodologies for evaluating petroleum hydrocarbon impacts at oil and natural gas E&P sites. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2001. Risk - based methodologies for evaluating petroleum hydrocarbon impacts at oil and natural gas E&P sites. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2001). Risk - based methodologies for evaluating petroleum hydrocarbon impacts at oil and natural gas E&P sites. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Risk - based methodologies for evaluating petroleum hydrocarbon impacts at oil and natural gas E&P sites. Washington: American Petroleum Institute, API. 2001.