Al Nethami، Z. K.، و Smadi، O. M. (2009). Developing an ESL Writing Portfolio For Jordanian Tenth Grade Students Enrolled in the International General Certificate of Secondary Education and Measuring its Effect on Their Writing Performance (رسالة دكتوراه غير منشورة). جامعة اليرموك، إربد. مسترجع من http://search.mandumah.com/Record/724053
Al Nethami، Zein Khalid، و Oqlah Mahmoud Smadi. "Developing an ESL Writing Portfolio For Jordanian Tenth Grade Students Enrolled in the International General Certificate of Secondary Education and Measuring Its Effect On Their Writing Performance" رسالة دكتوراه. جامعة اليرموك، إربد، 2009. مسترجع من http://search.mandumah.com/Record/724053