Arif S, Suprijono A, Sunarto S. Development of Social Studies Textbooks Based on Environmental Education for JHS Grade VII. Indones. J. Soc. Stud. [Internet]. 2021 Jul. 29 [cited 2025 Nov. 7];4(1):11-8. Available from: https://journal.unesa.ac.id/index.php/jpips/article/view/12092