Sam, Fitrayuddin, et al. “Developing an Ethnomathematics-Based Transformational Geometry Textbook to Enhance Students’ Mathematical Literacy”. Kognitif: Jurnal Riset HOTS Pendidikan Matematika, vol. 5, no. 4, Dec. 2025, pp. 1653-71, doi:10.51574/kognitif.v5i4.3860.