El Koili، L. (2008). How Far Has "Time -Spent- On-The-Task " Bypupils and Teachers Proved To Be Crucial Variable in Classroom Research. مجلة العلوم الإنسانية، ع 30 ، 113 - 123. مسترجع من http://search.mandumah.com/Record/431683
El Koili، Larbi. "How Far Has "Time -Spent- On-The-Task " Bypupils and Teachers Proved To Be Crucial Variable in Classroom Research." مجلة العلوم الإنسانية ع 30 (2008): 113 - 123. مسترجع من http://search.mandumah.com/Record/431683