Koutrouba, Konstantina, and Ioannis Christopoulos. “Cooperative Learning Effectiveness in the Bureaucratic School: Views of Greek Secondary Education Teachers”. International Journal of Learning, Teaching and Educational Research 12, no. 2 (June 30, 2015): 64–88. Accessed April 19, 2026. https://ijlter.net/index.php/ijlter/article/view/1057.