Budiarti, Lia Wahyuningsih, and Jumadi Jumadi. “Development of Learning Media of Ulatics (Optical Standards) to Measure Science Process Skills”. Jurnal Penelitian Pendidikan IPA 8, no. 5 (November 30, 2022): 2191–2194. Accessed May 17, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/1785.