Benchmarking and its Impact on Improving Customer Service: An Applied Study in Travel and Tourism Companies in Holy City of Karbala. Peri. Jour. of Mode. Phil. Soci. Scie. and Huma. [Internet]. 2022 Feb. 28 [cited 2025 Apr. 19];3:119-31. Available from: https://periodica.org/index.php/journal/article/view/34