Napitupulu E, Perangin-angin S, Sebayang N. Development of Indonesian National Qualification Framework-Based teaching models and materials for learning instructional media design Department of building Engineering education faculty of engineering state University of Medan. ijaems [Internet]. 2020 Apr. 17 [cited 2024 Jul. 22];6(1). Available from: https://journal-repository.com/index.php/ijaems/article/view/1844