Rancangan Malaysia Keenam (1991-1995) : Institut Pertanian Persekitaran Terkawal (IPPT), MYUPM-UNIPERMA-13-424, Container: Gedung 1/56. MAIN ARCHIVES.

Rancangan Malaysia Keenam (1991-1995) : Institut Pertanian Persekitaran Terkawal (IPPT), MYUPM-UNIPERMA-13-424, Container: Gedung 1/56. MAIN ARCHIVES. http://putraarchives.upm.edu.my:8081/repositories/2/resources/1131 Accessed March 14, 2025.