Khatim, Mohamed Laid. “The Improvement of Workers Efficiency through Training Program in Foreign Large Enterprises: The Case of LAFARGE – M’sila.”. Dirassat Journal Economic Issue 12, no. 2 (June 25, 2021): 199-216. Accessed July 3, 2024. http://journals.lagh-univ.dz/index.php/djei/article/view/1390.