كوب ج. تحليل البيانات الإحصائية . Dirasat in Economics and Business , [S. l.], v. 28, 2009. DOI: 10.37376/deb.v28i.3062. Disponível em: https://journals.uob.edu.ly/index.php/DEB/article/view/3062. Acesso em: 5 jun. 2026.