1. Beaulieu , L 2002 http://srdc.msstate.edu/publications/227/227_asset_mapping.pdf
2. Berkowitz , B. Wadud , E 2006 http://ctb.ku.edu/en/tablecontents/sub_section_tools_1043.htm#tools2
3. Center for Substance Abuse Prevention 2007 http://prevention.samhsa.gov/assessment