Khansa, J. D. ., and C. A. Nuraskin. “The Effect of Chewing Apples (Malus Sylvestris mill.) on The Plaque Index Among Elementary School Students”. Journal Center of Excellent : Health Assistive Technology, vol. 4, no. 2, Sept. 2026, pp. 129-33, doi:10.36082/jchat.v4i2.3513.