Hassan, M. B. P. (2003). Solid waste disposal comparison between open dumping and sanitary landfill (Kg. Pertok Machang, Kelantan (open dumping) and Puchong, Selangor (sanitary landfill) / Mohd Budiman Putra Hassan.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hassan, Mohd Budiman Putra. Solid Waste Disposal Comparison Between Open Dumping and Sanitary Landfill (Kg. Pertok Machang, Kelantan (open Dumping) and Puchong, Selangor (sanitary Landfill) / Mohd Budiman Putra Hassan. 2003.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hassan, Mohd Budiman Putra. Solid Waste Disposal Comparison Between Open Dumping and Sanitary Landfill (Kg. Pertok Machang, Kelantan (open Dumping) and Puchong, Selangor (sanitary Landfill) / Mohd Budiman Putra Hassan. 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.