Ali Mohammad Rezaei, Reza Samadi, Ali Akbar Amin Beydokhti, y Mahmood Najafi, Farahnaz KianErsi. «Understanding the Development of Peace Concept in Children’s Drawings». Opción 34, no. 1 (junio 10, 2019): 63-80. Accedido julio 27, 2024. https://produccioncientificaluz.org/index.php/opcion/article/view/24026.