“The Impact of E-Marketing on Customer Satisfaction A Sample Study of Clients of Echellalba Tour Travel and Tourism Agency in M’Sila”. Journal of Economic Additions 9, no. 2 (September 30, 2025): 620–639. Accessed April 5, 2026. https://journals.univ-ghardaia.edu.dz/idafat/article/view/1858.