Sources:

UC Berkeley School of Social Welfare, Child Welfare Research Center Child Welfare Services Reports.  Referral and Substantiation Rates by County.  [Updated 24 June 2003; Cited 28 July 2003].  Available at http://cssr.berkeley.edu/CWSCMSreports/referrals/.

County of Yolo Maternal Child and Adolescent Health and Child Welfare Services.  Perinatal Predictors of Early Child Abuse and Neglect.  [Updated July 2001; Cited 28 July 2003].  Available at http://www.yolocounty.org/org/health/reports.asp.