Al Eid، M.، و Moscardini، L. (2009). Issues Surrounding the Use of Manipulatives from the Viewpoint of Mathematics teachers in elementary-level government schools in alahsa Saudi Arabia (رسالة ماجستير غير منشورة). University of Strathclyde، غلاسكو. مسترجع من http://search.mandumah.com/Record/662735
Al Eid، Mohammed، و Lio Moscardini. "Issues Surrounding the Use of Manipulatives From the Viewpoint of Mathematics Teachers in Elementary-level Government Schools in Alahsa Saudi Arabia" رسالة ماجستير. University of Strathclyde، غلاسكو، 2009. مسترجع من http://search.mandumah.com/Record/662735