Md. Zain, Shahrom, Muhammad Imran Mohd Junaidi, and Noor Ezlin Ahmad Basri. 2022. “Sukarelawan Alam Sekitar: Penerimaan Dan Kefahaman Pelajar”. Jurnal Personalia Pelajar 18 (2). https://spaj.ukm.my/personalia/index.php/personalia/article/view/165.