APA

American Petroleum Institute A., . (1984). Standard procedure for drilling fluid bioassays (tentative). Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1984. Standard procedure for drilling fluid bioassays (tentative). Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1984). Standard procedure for drilling fluid bioassays (tentative). Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Standard procedure for drilling fluid bioassays (tentative). Washington: American Petroleum Institute, API. 1984.