APA

American Petroleum Institute A., . (2006). Bulletin on management of naturally ocurring radioactive materials (NORM) in oil & gas production. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2006. Bulletin on management of naturally ocurring radioactive materials (NORM) in oil & gas production. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2006). Bulletin on management of naturally ocurring radioactive materials (NORM) in oil & gas production. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Bulletin on management of naturally ocurring radioactive materials (NORM) in oil & gas production. Washington: American Petroleum Institute, API. 2006.