Amilia Hasbullah and  Wan Zahari Wan Yussof and  Maziah Ismail,  A Proposal of Community based Facility Management Performance (CbFM) in the Education System of Batubara District in Indonesia.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 1757 - 1760
    [viewed 19 April 2021]. Available from: https://publications.waset.org/pdf/4557.