MD. ZAIN, S.; MOHD JUNAIDI, M. I.; AHMAD BASRI, N. E. Sukarelawan Alam Sekitar: Penerimaan dan Kefahaman Pelajar. Jurnal Personalia Pelajar, [S. l.], v. 18, n. 2, 2022. Disponível em: https://spaj.ukm.my/personalia/index.php/personalia/article/view/165. Acesso em: 26 aug. 2025.