Sopianah, Y., M. F. Sabilillah, and O. Oedijani. “The Effects of Audio-Video Instruction in Brushing Teeth on the Knowledge and Attitude of Young Slow Learners in Cirebon Regency”. Dental Journal, vol. 50, no. 2, June 2017, pp. 66-70, doi:10.20473/j.djmkg.v50.i2.p66-70.