APA
American Petroleum Institute A., . (2005). Collecting and interpreting soil gas samples from the vadose zone. Washington: American Petroleum Institute, API.
Chicago
American Petroleum Institute API, . 2005. Collecting and interpreting soil gas samples from the vadose zone. Washington: American Petroleum Institute, API.
Harvard
American Petroleum Institute A., . (2005). Collecting and interpreting soil gas samples from the vadose zone. Washington: American Petroleum Institute, API.
MLA
American Petroleum Institute API, . Collecting and interpreting soil gas samples from the vadose zone. Washington: American Petroleum Institute, API. 2005.