Tunming, P., K. Tumrongarnuntasakul, N. Suphagalin, P. Suggsangawong, P. Danphornpraserd, R. Sinthuprasit, R. Sitthi, N. Sinsupan, and A. Ratanasiri. “Knowledge and Behavior of Khon Kaen University Student for Ear Picking”. Srinagarind Medical Journal, vol. 21, no. 1, Nov. 2013, pp. 2-8, https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/13200.