Mehrad, Aida, Jordi Fernández-Castro, and Maria Pau González Gómez de Olmedo. 2020. “A Systematic Review of Leadership Styles, Work Engagement and Organizational Support”. International Journal of Research in Business and Social Science (2147- 4478) 9 (4):66-77. https://doi.org/10.20525/ijrbs.v9i4.735.