Putri, V.E. and Ikaningtyas, M. 2026. The Influence of Transformational Leadership Style and Internal Communication on Employee Engagement at Haivo Group, Surabaya. Indonesian Interdisciplinary Journal of Sharia Economics (IIJSE). 9, 2 (Aug. 2026), 17241-17251. DOI:https://doi.org/10.31538/iijse.v9i2.11123.