Saleh، M. M. (2020). A Challenge Based Learning Program to Develop General Diploma Students Research Skills and their Satisfaction. مجلة كلية التربية بالمنصورة، ع109, ج3 ، 3 - 28. مسترجع من http://search.mandumah.com/Record/1119821
Saleh، Marwa Mourad. "A Challenge Based Learning Program to Develop General Diploma Students Research Skills and Their Satisfaction." مجلة كلية التربية بالمنصورة ع109, ج3 (2020): 3 - 28. مسترجع من http://search.mandumah.com/Record/1119821