Safitri, Helmy, and Firda Zahra. “THE DEVELOPMENT OF INTEGRATED SCIENCE WORKSHEET NESTED TYPE FOR 8th GRADE OF JUNIOR HIGH SCHOOL STUDENTS ON THE HUMAN DIGESTIVE SYSTEM MATERIAL”. Universe 5, no. 1 (June 30, 2024): 18-25. Accessed July 7, 2024. http://universe.ppj.unp.ac.id/index.php/universe/article/view/263.