Yulkifli Y, Ningrum MV, Indrasari W. The Validity of Student Worksheet Using Inquiry-Based Learning Model with Science Process Skill Approach for Physics Learning of High School. jpppf [Internet]. 2019Nov.11 [cited 2025May4];5(2):155 -162. Available from: http://103.8.12.212:33180/unj/index.php/jpppf/article/view/12337