(NCC-PC Referral Guidelines for Suspected Cancer  in Adults and Children)

(Grady-Weliky 2003)

(Singer et.al. 1995)

(Jean Louis 2007)

(Gibbons and Freeman 2006)

(Pietrangelo 2004)

(Meyer and Hostetter 2007)

(Webmd.com)

(Newton 2005)

(Australian Psychological Society 2008)