Derya G. Yıldız, Hasan Çetin, Abbas Türnüklü, Mustafa Tercan, Cemile Çetin, and Tarkan Kaçmaz. 2023. “Evaluation of ‘Polatlı Negotiator Mediator Leader Students’ Project”. Elementary Education Online 15 (2):650-70. https://ilkogretim-online.org/index.php/pub/article/view/6614.