D. Y. Wahyudi, S. S. P. Jati, D. N. Wijaya, V. S. A. Laili, L. S. Ananda, and A. M. Ikhrom, “Cross-Cultural and Toponymy Course for History Teachers in East Java: Dissemination Recent Study about Singhasari Kingdom in History Learning”, Jo. Soc. Know. Ed, vol. 6, no. 3, pp. 367-374, Aug. 2025.