Masalah penagihan semula dadah satu kajian bagi daerah Kuala Kangsar - MOHD. Yusoff Hj. Ismail (Bangi : UKM, 1988)
Thesis (Diploma Sains Kepolisan) - Universiti Kebangsaan Malaysia, 1988/89
Keywords: Drug abuse -- Perak, Malaysia - Psychological aspects - Dissertations, thesis, etc; Narcotic addicts -- Perak, Malaysia; Narcotic habit -- Perak, Malaysia - complications - Dissertations, thesis, etc