kamel, M. (2015). Employ mobile devices techniques to provide reference service to libraries and information centers "whatsapp" model. test, 2(1), 113-139. doi: 10.21608/ijlis.2015.64046
Mohamed Abd elftah kamel. "Employ mobile devices techniques to provide reference service to libraries and information centers "whatsapp" model". test, 2, 1, 2015, 113-139. doi: 10.21608/ijlis.2015.64046
kamel, M. (2015). 'Employ mobile devices techniques to provide reference service to libraries and information centers "whatsapp" model', test, 2(1), pp. 113-139. doi: 10.21608/ijlis.2015.64046
kamel, M. Employ mobile devices techniques to provide reference service to libraries and information centers "whatsapp" model. test, 2015; 2(1): 113-139. doi: 10.21608/ijlis.2015.64046