APA

American Petroleum Institute A., PTI Environmental Service & PTI Environmental Service. (1991). Evaluation of restoration alternatives for natural resources injured by oil spills. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, PTI Environmental Service and PTI Environmental Service. 1991. Evaluation of restoration alternatives for natural resources injured by oil spills. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., PTI Environmental Service and PTI Environmental Service. (1991). Evaluation of restoration alternatives for natural resources injured by oil spills. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, PTI Environmental Service and PTI Environmental Service. Evaluation of restoration alternatives for natural resources injured by oil spills. Washington: American Petroleum Institute, API. 1991.