Ratnawati, N.; Wahyuningtyas, N.; Ruja, I. N.; Habibi, M. M.; Anggraini, R.; The, H. Y. Developing Multimedia-Based Learning Media for Basic Skill of Teaching Material in Order to Equip Professional Teachers. Int. J. Emerg. Technol. Learn. 2021, 16, pp. 77-89.