1. American Speech-Language-Hearing Association (2009). ASHA SLP Health Care Survey Report: Workforce and Work Conditions Trends 2005–2009.
2. American Speech-Language-Hearing Association (2009). ASHA SLP Health Care Survey 2009: Workforce and Work Conditions.
3. American Speech-Language-Hearing Association (2009). Productivity. Available from www.asha.org/slp/productivity.htm. (Members only).
4. Centers for Medicare and Medicare Services. Physician Fee Schedule. www.cms.gov/PhysicianFeeSched/PFSFRN/itemdetail.asp?filterType=none&filterByDID=99&sortByDID=4&sortOrder=descending&itemID=CMS1223902&intNumPerPage=10