RISMAWATI, Rima; DAROJAT, Ayi; ARIPIN, Usman. Konsep Matematika dalam Budidaya dan Pengolahan Kopi Tangsi Wangi Gununghalu : Studi Etnomatematika. Lattice Journal : Journal of Mathematics Education and Applied, [S. l.], v. 5, n. 2, p. 176–188, 2025. DOI: 10.30983/lattice.v5i2.10467. Disponível em: https://ejournal.uinbukittinggi.ac.id/index.php/lattice/article/view/10467. Acesso em: 17 mar. 2026.