I. M. Yusoff, W. R. W. Hussin, F. Hassan, N. Badarulzaman, M. Z. Omar, and M. Rindam, “Meningkatkan Kualiti Hidup Sosial:Satu Kajian Kes di Kawasan Gugusan FELDA Trolak,Perak Darul Ridzuan, Malaysia: Improving the Quality of Social Life: A Case Study in FELDA Trolak Group, Perak Darul Ridzuan, Malaysia”, PERS, vol. 4, no. 2, pp. 98–107, Nov. 2012.