Mohd Nasaruddin, S. F., and W. N. Osman. “Perkembangan Perumahan Komuniti Berpagar Dan Berpengawal Dalam Trend Peningkatan Kualiti Hidup : The Progress of Guarded and Gated Housing Community towards Trend to Improve Quality of Life”. Journal of Advanced Research in Business and Management Studies, vol. 7, no. 1, Oct. 2020, pp. 60-66, https://akademiabaru.com/submit/index.php/arbms/article/view/1233.