الوصول الحر: https://escholarship.org/uc/item/7q96d5p8Test
الوصول الحر: https://doaj.org/article/041d03ee3d0b4d04bbe5979ea9a04158Test
الإتاحة: https://doi.org/10.7717/peerj.16024Testhttps://pearl.plymouth.ac.uk/handle/10026.1/21690Test
URL: https://escholarship.org/uc/item/7q96d5p8Testhttps://escholarship.orgTest/