APA

American Petroleum Institute A., . (1987). Manual of sampling and analytical methods for petroleum hydrocarbons in groundwater and soil. Washington: American Petroleum Institute, API.

Chicago

American Petroleum Institute API, . 1987. Manual of sampling and analytical methods for petroleum hydrocarbons in groundwater and soil. Washington: American Petroleum Institute, API.

Harvard

American Petroleum Institute A., . (1987). Manual of sampling and analytical methods for petroleum hydrocarbons in groundwater and soil. Washington: American Petroleum Institute, API.

MLA

American Petroleum Institute API, . Manual of sampling and analytical methods for petroleum hydrocarbons in groundwater and soil. Washington: American Petroleum Institute, API. 1987.