2-s2.0-84935474006. (2015). Purpose statements in experimental doctoral dissertations submitted to U.S. universities: An inquiry into doctoral students' communicative resources in language education. Journal of English for Academic Purposes, 20, . https://doi.org/10.1016/j.jeap.2015.06.002
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)2-s2.0-84935474006. "Purpose Statements in Experimental Doctoral Dissertations Submitted to U.S. Universities: An Inquiry into Doctoral Students' Communicative Resources in Language Education." Journal of English for Academic Purposes 20 (2015). https://doi.org/10.1016/j.jeap.2015.06.002.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)2-s2.0-84935474006. "Purpose Statements in Experimental Doctoral Dissertations Submitted to U.S. Universities: An Inquiry into Doctoral Students' Communicative Resources in Language Education." Journal of English for Academic Purposes, vol. 20, 2015, https://doi.org/10.1016/j.jeap.2015.06.002.