(2016). Information Marketing Services in University Libraries Central Library in Sana'a University (A Model). , 1(217), 253-286.
. "Information Marketing Services in University Libraries Central Library in Sana'a University (A Model)". , 1, 217, 2016, 253-286.
(2016). 'Information Marketing Services in University Libraries Central Library in Sana'a University (A Model)', , 1(217), pp. 253-286.
Information Marketing Services in University Libraries Central Library in Sana'a University (A Model). , 2016; 1(217): 253-286.