Feiz,D. , , Zarei,A. , and Abdollahi,R. . "Investigating the effect of information source and social interactions on consumers purchase intention in Cyberspace (Case study: advertisement channels of tourism services in social networks of Telegram and Instagram)", Journal of Tourism and Development, 7, 2, 2018, 113-129. doi: 10.22034/jtd.2018.69464