Christin, Carl, et al. “Keberkesanan Dan Faedah Pengasingan Kitar Semula Dalam Masyarakat Di Taman Universiti: Kajian Kes. ”. Jurnal Penyelidikan Sains Sosial, vol. 7, no. 25, Dec. 2024, pp. 11-19, https://academicinspired.com/jossr/article/view/2730.