Laporan Tahunan 2005 Annual Report, MYUPM-UNIPUTRA-13-534, Container: Gedung 1/58. MAIN ARCHIVES.
Laporan Tahunan 2005 Annual Report, MYUPM-UNIPUTRA-13-534, Container: Gedung 1/58. MAIN ARCHIVES. http://putraarchives.upm.edu.my:8081/repositories/2/resources/1114 Accessed March 14, 2025.