A.Rezan Çeçen-Erogul, Mustafa Zengel. The Effectiveness of an Assertiveness Training Programme on Adolescents’ Assertiveness Level. Elementary Education Online [Internet]. 2023 Dec. 15 [cited 2024 Jul. 8];8(2):485-92. Available from: https://ilkogretim-online.org./index.php/pub/article/view/2476