الوصول الحر: https://doaj.org/article/1e0fd4beaefc44e297cea8b319679396Test
الإتاحة: https://scholarlycommons.pacific.edu/uop_etds/3825Testhttps://scholarlycommons.pacific.edu/context/uop_etds/article/4822/viewcontent/Asfir_pacific_0173E_10752.pdfTest