1.
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 2020Jan.19];5(2):155 -162. Available from: http://journal.unj.ac.id/unj/index.php/jpppf/article/view/12337