Pratiwi, A., and P. Ponidi. “Changing Mangalehen Tuor Tradition in Mandailing Weddings: A Case Study from Damuli Pekan Village for Sociology Learning”. Journal of Mathematics Instruction, Social Research and Opinion, vol. 4, no. 3, July 2025, pp. 647-60, doi:10.58421/misro.v4i3.604.