Handi Winarko, Eko, and Fitri Puji Astutik. “INCREASING THE ABILITY TO DESCRIBE HEAT AND SOUND ENERGY IN THE ENVIRONMENT USING EXPERIMENTAL METHOD IN CLASS IV STUDENTS OF SDN 1 SOMBRON”. PROGRES PENDIDIKAN 3, no. 2 (May 31, 2022): 93–97. Accessed April 29, 2024. https://prospek.unram.ac.id/index.php/PROSPEK/article/view/241.