APA

American Petroleum Institute A., . (2015). Preparation and testing of foamed cement formulations at atmospheric pressure. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 2015. Preparation and testing of foamed cement formulations at atmospheric pressure. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (2015). Preparation and testing of foamed cement formulations at atmospheric pressure. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Preparation and testing of foamed cement formulations at atmospheric pressure. Washington: American Petroleum Institute, API. 2015.