Kristiana, Y., A. Panjaitan, V. A. H. . . Goeltom, and A. B. Prasetya. “Managing Employee Retention in Mergers and Acquisitions: A Systematic Review”. IJOSPOL - International Journal of Social, Policy and Law , vol. 2, no. 4, Oct. 2021, pp. 44 -54, doi:10.8888/ijospl.v2i4.75.