Sunardi, G. and Heikal, J. . (2026) “B2B Segmentation of Coal Buyers Using RFM Analysis and Ethnography at PT XYZ ”, JIBEMA: Jurnal Ilmu Bisnis, Ekonomi, Manajemen, dan Akuntansi, 4(1), pp. 3177–3195. doi: 10.62421/jibema.v4i1.764.