Suprapto, Nadi, and D Dwikoranto. “Development of Learning Materials With Socratic Model at History of Physics”. Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 1, no. 1 (June 14, 2011): 14–22. Accessed May 5, 2024. https://journal.unesa.ac.id/index.php/jpfa/article/view/144.