Bibliography

http://www.jinxiboo.com/blog/2010/2/20/history-of-filipino-tattoos-tattooed-mummies-rites-of-passag.html

http://www.smithsonianmag.com/history/tattoos-144038580/?no-ist=&page=3

http://king.tattoora.com/tattoo-articles/history-of-tattooing/