دراسة ميدانية على شركة الخطوط الجوية الجزائرية :covid-: Factorial structure of the leadership practices during the crisis of Covid-19 pandemic Case study Air Algerie company. renaf. 2025;18(28):589-604. Accessed October 22, 2026. https://journals.univ-chlef.dz/index.php/renaf/article/view/440