“Information Marketing Services in University Libraries Central Library in Sana’a University (A Model)”. ALUSTATH JOURNAL FOR HUMAN AND SOCIAL SCIENCES 216, no. 1 (December 15, 2020): 253–286. Accessed May 5, 2024. https://alustath.uobaghdad.edu.iq/index.php/UJIRCO/article/view/1518.