رابط دائم
https://update.library.uitm.edu.my/Record/Dahalan%20D.;%20Ahmad%20N.;%20Hassan%20M.S.;%20Muda%20M.;%20Othman%20J.;%20Abdullah%20N.A.W.
https://update.library.uitm.edu.my/Record/Dahalan%20D.;%20Ahmad%20N.;%20Hassan%20M.S.;%20Muda%20M.;%20Othman%20J.;%20Abdullah%20N.A.W.