KERAMATI, Mohammad Reza. Effect of student team achievement division (STAD) on academic achievement of undergraduate psychology students. International Journal of Education and Cognitive Sciences, [S. l.], v. 2, n. 2, p. 1–11, 2022. Disponível em: https://journalecs.com/index.php/ecs/article/view/30.. Acesso em: 3 jul. 2025.