H. S., D. Y.; Marpaung, A. S.; Sibarani, B.; Murni, S. M. An Investigation of School Leadership in the Effective Implementation of Bilingual Education in Indonesia: A Case Study . J. Humanities Educ. Dev. 2024, 6 (3), 28-35. https://doi.org/10.22161/jhed.6.3.5.