Zuyina, Alsa, and Wahono Widodo. 2020. “VALIDITY OF ETHNOSCIENCE BOOKLET MEDIA IN THE REGION OF PONOROGO ON SOUND WAVE SUB MATERIAL”. PENSA: E-JURNAL PENDIDIKAN SAINS 8 (2), 178-82. https://ejournal.unesa.ac.id/index.php/pensa/article/view/38360.