رابط دائم
https://update.library.uitm.edu.my./Record/Ibrahim%20I.M.;%20Mohd%20Kassim%20E.S.;%20Husin%20H.;%20Jai%20J.;%20Daud%20M.;%20Hashim%20M.A.
https://update.library.uitm.edu.my./Record/Ibrahim%20I.M.;%20Mohd%20Kassim%20E.S.;%20Husin%20H.;%20Jai%20J.;%20Daud%20M.;%20Hashim%20M.A.