Horley, "Issues in forensic psychotherapy", in Winter & Viney 2005, p. 227 Winter, David A.; Viney, Linda L., eds. (2005). Personal construct psychotherapy: advances in theory, practice, and research. London; Philadelphia: Whurr Publishers. doi:10.1002/9780470713686. ISBN9781861563941. OCLC57485437.
Horley, "Issues in forensic psychotherapy", in Winter & Viney 2005, p. 227 Winter, David A.; Viney, Linda L., eds. (2005). Personal construct psychotherapy: advances in theory, practice, and research. London; Philadelphia: Whurr Publishers. doi:10.1002/9780470713686. ISBN9781861563941. OCLC57485437.