APA

American Petroleum Institute A., . (2001). Primer for evaluating ecological risk at petroleum release sites. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2001. Primer for evaluating ecological risk at petroleum release sites. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2001). Primer for evaluating ecological risk at petroleum release sites. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Primer for evaluating ecological risk at petroleum release sites. Washington: American Petroleum Institute, API. 2001.