تطور الكف المعرفي لدى الاطفال . Journal Of Educational and Psychological Researches, [S. l.], v. 6, n. 20, p. 35–59, 2009. Disponível em: https://jperc.uobaghdad.edu.iq/index.php/jperc/article/view/745. Acesso em: 8 may. 2025.