1. The Oxford modern English dictionary,1995
2. Body adornment and tattooing; clinical issues and state regulations;Korn;Phys Assistant,1996
3. Tattooing and body piercing;Grief;Clin Nurs Res,1999
4. Royal College of Nursing Congress 2000. Press briefing. Body piercing. London, England: Royal College of Nursing; April 2000.