1"Professional community of teachers" makes a difference . Stanford University News Service. http://news- service.stanford.edu/pr/92/920511Arc2227.html.05/11/92.
2Adam Gamoran. Strong Professional Community Benefits Teachers, Students. http://www.wcet.wisc.edu/news/ coverStories/strong professional community.php. January 2006.
3Vaishali Hormwar. ‘Working Smarter By Working Together'; Education Weelc Apt 2, 2008. Vol. 27.
4Assessing Professional Collaboration in Schools: Knowing What Works.Robert A.Gable,Mark P.Mostert, and Stephen W.Tonelson. Academi Research Library, Spring 2004.
