Herlambang, Panca, Evi Palenewen, and Susilo Susilo. “Problem Analysis on Teachers in the Development of Discovery Learning Model-Based Worksheet and Student Problem on Cognitive Learning Achievement”. BIODIK 4, no. 2 (December 3, 2018): 95-104. Accessed July 6, 2024. https://online-journal.unja.ac.id/biodik/article/view/6126.