“PSYCHOLOGICAL CAPITAL AND ITS ROLE IN ENHANCING THE VOICE BEHAVIOR OF EMPLOYEES: AN ANALYTICAL EXPLORATORY STUDY FOR A SAMPLE OF WORKERS IN THE DIRECTORATE OF EDUCATION OF NAJAF GOVERNORATE IN IRAQ”. 2023. World Bulletin of Social Sciences 19 (February): 18-30. https://scholarexpress.net/index.php/wbss/article/view/2142.