APA

Hay K. G., American Petroleum Institute A. & American Petroleum Institute A. (199). Questions and answers about fish and offshore oil development. Washington: American Petroleum Institute, API.

Chicago

Hay Keith G, American Petroleum Institute API and American Petroleum Institute API. 199. Questions and answers about fish and offshore oil development. Washington: American Petroleum Institute, API.

Harvard

Hay K. G., American Petroleum Institute A. and American Petroleum Institute A. (199). Questions and answers about fish and offshore oil development. Washington: American Petroleum Institute, API.

MLA

Hay Keith G, American Petroleum Institute API and American Petroleum Institute API. Questions and answers about fish and offshore oil development. Washington: American Petroleum Institute, API. 199.