Sugiarto, A., & Hidayati, S. (2019). FEASIBILITY ANALYSIS OF PRESENTATION 8 GRADE STUDENTS’ SCIENCE TEXTBOOK ON PRESSURE CHAPTER: A CASE STUDY IN SMP NEGERI 22 SURABAYA. PENSA: E-JURNAL PENDIDIKAN SAINS, 7(3). Retrieved from https://ejournal.unesa.ac.id/index.php/pensa/article/view/32293