Siregar, Rodearna, Mukti Hamjah Harahap, and Irfandi Irfandi. “Development of E-Module on Static Fluid Material Containing Local Wisdom of the East Coast of North Sumatra Using Flip Pdf Professional”. Journal of Innovative Physics Teaching 2, no. 2 (December 21, 2024): 113–125. Accessed January 30, 2025. https://jipt.ppj.unp.ac.id/index.php/jipt/article/view/70.