بوجنانة ف. Evaluating the Effectiveness of Marketing Communication Strategy in Economic Services Companies Empirical Study on a Sample of Mobile Phone Customers in Algeria. mjrs [Internet]. 2019 Jun. 30 [cited 2024 Nov. 24];5(1). Available from: https://jiamcs.centre-univ-mila.dz/index.php/mjrs/article/view/834