Md. Zain, S., M. I. Mohd Junaidi, and N. E. Ahmad Basri. “Sukarelawan Alam Sekitar: Penerimaan Dan Kefahaman Pelajar”. Jurnal Personalia Pelajar, vol. 18, no. 2, Feb. 2022, https://spaj.ukm.my/personalia/index.php/personalia/article/view/165.