Rasoolzadeh Dorabad R, Haj Alian F. Investigating the effect of spiritual leadership on the empowerment of employees in the petroleum engineering and development company. IJIMOB [Internet]. 2021 Sep. 1 [cited 2024 Jul. 4];1(3):30-4. Available from: https://journals.kmanpub.com/index.php/ijimob/article/view/315