Putri, Valiza Eka, and Maharani Ikaningtyas. “The Influence of Transformational Leadership Style and Internal Communication on Employee Engagement at Haivo Group, Surabaya”. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE) 9, no. 2 (August 3, 2026): 17241-17251. Accessed August 15, 2026. https://e-journal.uac.ac.id/index.php/iijse/article/view/11123.