ALMI, Yahia. "A Word-Frequency Based Assessment of English As a Foreign Language Master One Students’ Written Receptive and Productive Lexical Knowledge". مجلة العلوم الإنسانية, م 28, عدد 4, ديسمبر، 2017, ص 25-40, http://conferences.umc.edu.dz/h/article/view/2649.