Al Sharif، B. A. A.، و Grant، F. (2011). Relationship between Government Directive and Project Cost Time and Managerial Attitude to Use Value Engineering in the Saudi Arabian Construction Industry (رسالة ماجستير غير منشورة). Heriot Watt University, Edinburgh، إدنبرة. مسترجع من http://search.mandumah.com/Record/609408
Al Sharif، Basim Abd Allah، و Fiona Grant. "Relationship between Government Directive and Project Cost Time and Managerial Attitude to Use Value Engineering in the Saudi Arabian Construction Industry" رسالة ماجستير. Heriot Watt University, Edinburgh، إدنبرة، 2011. مسترجع من http://search.mandumah.com/Record/609408