عبد الكريم احمد أ. Efficiency of using Cooperative Learning Together Strategy on Certain Characteristics of fourth year Students at History Department College of Education. College of Basic Education Research Journal, [S. l.], v. 5, n. 1, p. 1–27, 2007. Disponível em: https://stats.uomosul.edu.iq/index.php/berj/article/view/39869. Acesso em: 26 oct. 2025.