Zuyina, Alsa, and Wahono Widodo. “VALIDITY OF ETHNOSCIENCE BOOKLET MEDIA IN THE REGION OF PONOROGO ON SOUND WAVE SUB MATERIAL”. PENSA: E-JURNAL PENDIDIKAN SAINS 8, no. 2 (July 1, 2020): 178-182. Accessed May 2, 2024. https://ejournal.unesa.ac.id/index.php/pensa/article/view/38360.