p)De Cuyper, Christa (2010). "Piercings: Techniques and Complications". In De Cuyper, Christa; Pérez-Cotopos, Maria Luisa (eds.). Dermatologic Complications with Body Art: Tattoos, Piercings and Permanent Make-Up. Springer Books. pp. 43–52. ISBN 978-3-642-03291-2. {{cite book}}: Invalid |ref=harv (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)Department of Health, Western Australia (2006). "Use of Ear Piercing Guns" (PDF). සම්ප්‍රවේශය 3 January 2013. {{cite web}}: Invalid |ref=harv (help)DeMello, Margo (2007). Encyclopedia of Body Adornment. Greenwood Publishing Group. ISBN 0-313-33695-4. {{cite book}}: Invalid |ref=harv (help)DeMello, Margo (2012). Faces Around the World. ABC-Clio. ISBN 1598846175. {{cite book}}: Invalid |ref=harv (help)Folkard, Claire (2004). Guinness World Records (50 ed.). Guinness World Records. ISBN 1-892051-22-2. {{cite book}}: Invalid |ref=harv (help)Gay, Kathlyn (2002). Body Marks: Tattooing, Piercing, and Scarification. Women a