MULYANTO, Imam Arie; HEIKAL, Jerry. Customer Segmentation in B2B Professional Services Using RFM Analysis and Ethnographic Insights: Evidence from a 15-Year Longitudinal Study. Journal Research of Social Science, Economics, and Management, [S. l.], v. 5, n. 8, p. 10854–10865, 2026. DOI: 10.59141/jrssem.v5i8.1349. Disponível em: https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/1349. Acesso em: 16 mar. 2026.