Samia, L., Y. Naima, and M. Saliha. “THE IMPACT OF SERVICE MARKETING MIX TO IMPROVE PERCEIVED IMAGE OF USERS OF PUBLIC URBAN TRANSPORTATION BUSES. CASE STUDY: COLLECTIVE URBAN TRANSPORT COMPANY (ETUM) IN M’SILLA CITY ALGERIA”. British Journal of Marketing Studies, Vol. 2, no. 5, Sept. 2014, pp. 55-66, https://bjmsjournal.org/index.php/bjms/article/view/52.