Sari, Desi, and Eka Yusmaita. “Content Validity and Construct Validity Technical Guidelines for Project Based Learning Based on Chemical Literacy on Reaction Rate Materials”. Entalpi Pendidikan Kimia 3, no. 3 (July 24, 2022): 61-67. Accessed November 21, 2024. http://entalpipendidikan.ppj.unp.ac.id/index.php/epk/article/view/281.