APA

American Petroleum Institute A., . (1989). Evaluation of analytical methods for measuring appendix IX constituents in groundwater. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1989. Evaluation of analytical methods for measuring appendix IX constituents in groundwater. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1989). Evaluation of analytical methods for measuring appendix IX constituents in groundwater. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Evaluation of analytical methods for measuring appendix IX constituents in groundwater. Washington: American Petroleum Institute, API. 1989.