URL الوصول: https://www.j-ets.net/collection/published-issues/26_1
URL الوصول: https://www.jstor.org/stable/48707967
URL الوصول: https://www.j-ets.net/collection/published-issues/23_4
URL الوصول: https://www.jstor.org/stable/26981743
URL الوصول: https://doaj.org/article/546e021977d847e28651cf8567db4e14
URL الوصول: https://doaj.org/article/a4abc5641d1040618885ea8e21fc127c