Permanent link
https://openaccess.library.uitm.edu.my/Record/ndltd-netd.ac.za-oai-union.ndltd.org-univen-oai-univendspace.univen.ac.za-11602-847
https://openaccess.library.uitm.edu.my/Record/ndltd-netd.ac.za-oai-union.ndltd.org-univen-oai-univendspace.univen.ac.za-11602-847