N. F. Sabri, Z. Othman, M. Marzuki, and N. Nayan, “Analisis Kesesuaian Kawasanbagi Penanaman Buah-Buahan di Perlis, Malaysia: Area Suitability Analysis for Fruit Cultivation in Perlis, Malaysia”, PERS, vol. 5, no. 3, pp. 92–102, Dec. 2013.