Blagden, N., and S. Howard Pemberton. (2010). The Challenge in Conducting Qualitative Research with Convicted Sex Offenders. J. Crim. Just; 49(3): 269-281.
Hearn, Jeff, Andersson, Kjerstin and Cowburn, Malcolm (2007) Background Paper on Guidelines for Researchers on Doing Research with Perpetrators of Sexual Violence. Project Report. Sexual Violence Research Initiative.