Abas, M. A., and N. Md Nor. “Penglibatan Komuniti Kampus Di Universiti Sains Malaysia Terhadap Sistem Kitar Semula Satu Aliran”. Jurnal Personalia Pelajar, no. 17, May 2015, https://spaj.ukm.my/personalia/index.php/personalia/article/view/64.