URL الوصول: https://doaj.org/article/53998d4e19e64ab387b5cad77fca5fcb
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9bfdec1c71ecb7c810b059474276866fhttps://jtscm.co.za/index.php/jtscm/article/view/213