APA Citation

Focazio, M. J. (2002). Assessing ground-water vulnerability to contamination. US Geological Survey circular 1224.

Chicago Style Citation

Focazio, Michael J. "Assessing Ground-water Vulnerability to Contamination." US Geological Survey Circular 1224 2002.

MLA Citation

Focazio, Michael J. "Assessing Ground-water Vulnerability to Contamination." US Geological Survey Circular 1224 2002.

Warning: These citations may not always be 100% accurate.