Lazuardi, M.D.A., Muawwanah, U. dan Hendrakusuma3, B. 2026. Big Data Analytics Competence and Transformational Leadership in Managerial Self-Efficacy for Data-Driven Decisions. Jurnal Relevansi : Ekonomi, Manajemen dan Bisnis. 10, 1 (Jun 2026), 335–346. DOI:https://doi.org/10.61401/relevansi.v10i1.400.