1. Writing for Academic Purposes: Problems faced by Arab Postgraduate Students of the College of Business;F M S Al-Khasawneh;UUM. ESP World,2010
2. Sleep disorders -overview: MedlinePlus Medical Encyclopedia;Andrew Schriber;Nlm.nih.gov. Retrieved,2015
3. Self-efficacy in changing societies;A Bandura;9hwugV-812sYp-JyBkU-wrhqDd-5tzDLb-2ZJR4z-b5iXZp-xurUdR-5p2Z5U-oPsy7u-4SKH44-aac6fX-psY4PH-d9yHkN-5Hx2FE-DQWSQw-87Xmy5-47brCy-r1ngbh-cGwaPUocSMp7-agab5C-768PHr-768PGa-6vooC6-bxaJ6g-w91z9H-bUFSZ3-oDdVRi-h7GWXq-snBxw6-b6pJA2-7NCWYH-2Z8zJM-iKDyks-5PgXHJ-6UJGav-p5jYHF-oAyiVG-KMvnV,1997
4. Arab World English Journal