Mohammadzadeh Akhlaghi, Nahid, et al. “Students’ Knowledge Comprehension After Implementation of Live Conventional Demonstration, Video Teaching and Video-Assisted Instruction Methods in Endodontic Practice”. Iranian Endodontic Journal, vol. 12, no. 2, Mar. 2017, pp. 201-4, doi:10.22037/iej.v12i2.11573.