Rohman, Muhammad Milatur. “Student Worksheet Based on Contextual Teaching and Learning (CTL) in Biology Learning Related Ecosystem Concept”. Islamic Journal of Integrated Science Education (IJISE) 2, no. 1 (March 30, 2023): 46–60. Accessed November 22, 2024. https://jurnalfaktarbiyah.iainkediri.ac.id/index.php/ijise/article/view/895.