1.
Nasution N, Prasetyo K, Jacky M. Validitas Perangkat Pembelajaran Berbasis Education For Sustainable Development Pada Mata Pelajaran IPS Di Sekolah Menengah Pertama. IJSS [Internet]. 2020Jul.15 [cited 2024May3];3(1):13-20. Available from: https://journal.unesa.ac.id/index.php/jpips/article/view/7583