الوصول الحر: https://doaj.org/article/9c7b407b65c74e7eb07833f42d35b1b3Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f76ad6a47b770f3917ba5dce4ea080cTesthttp://journals.nauss.edu.sa/index.php/AJFSFM/article/view/214Test