رابط دائم
https://update.library.uitm.edu.my/Record/Krishnan%20R.;%20Osman%20I.;%20Muthusamy%20G.;%20Alias%20N.E.;%20Mastora%20S.H.
https://update.library.uitm.edu.my/Record/Krishnan%20R.;%20Osman%20I.;%20Muthusamy%20G.;%20Alias%20N.E.;%20Mastora%20S.H.