El Sayed، R. A. E. (2001). The Effectiveness of Problem Posing Strategies on Prospective Mathematics Teachers Problem Solving Performance. مستقبل التربية العربية، مج7, ع21 ، 5 - 28. مسترجع من http://search.mandumah.com/Record/668837
El Sayed، Reda Abu Elwan. "The Effectiveness of Problem Posing Strategies On Prospective Mathematics Teachers Problem Solving Performance." مستقبل التربية العربية مج7, ع21 (2001): 5 - 28. مسترجع من http://search.mandumah.com/Record/668837