Wartika, Sri, Zainuddin Muchtar, and Wesly Hutabarat. “The Development of Learning Modul of Colloid System Integrated With Project Based Learning (PjBL) System to Increase the Result of students™ Learning”. Jurnal Pendidikan Kimia 13, no. 1 (April 1, 2021): 78–84. Accessed July 2, 2025. https://jurnal.unimed.ac.id/2012/index.php/jpk/article/view/24147.