Saylor URL: http://www.saylor.org/books Saylor.org
[3] U.S. Department of the Treasury, Publication 950, Internal Revenue Service, 2009.
[4] U.S. Department of the Treasury, 2008, “SOI Tax Stats—IRS Data Book 2007,”
Internal Revenue Service, http://www.irs.gov/taxstats (accessed May 3, 2009).