Ardiani, Octaviasri Wahyu, and Suyanta . 2017. “Developing Subject Specific Pedagogy of Natural Science Based Problem-Based Learning Model to Increase Students’ Scientific Literacy and Learning Outcomes”. The International Journal of Science & Technoledge 5 (11). https://internationaljournalcorner.com/index.php/theijst/article/view/123699.