Yulkifli, Yulkifli, Melia Vivi Ningrum, and Widyaningrum Indrasari. “The Validity of Student Worksheet Using Inquiry-Based Learning Model With Science Process Skill Approach for Physics Learning of High School”. Jurnal Penelitian & Pengembangan Pendidikan Fisika 5, no. 2 (November 11, 2019): 155 - 162. Accessed May 4, 2025. http://103.8.12.212:33180/unj/index.php/jpppf/article/view/12337.