Rosida Tiurma Manurung, and Abdul Rahmat. “EFFECTIVENESS AND EFFICIENCY TEACHING AND LEARNING PROCESSWITH COURSE LEARNING SYSTEM”. Elementary Education Online 20, no. 4 (December 19, 2023): 1141–1146. Accessed July 5, 2024. https://ilkogretim-online.org./index.php/pub/article/view/5117.