ARFAH, A.; ZEFRIYENNI, Z. Analysis of Market Structure in the Form of Competition and Competitiveness in Various Business Sectors in Indonesia. Jurnal Multidisiplin Sahombu, [S. l.], v. 6, n. 04, p. 1189–1195, 2026. Disponível em: https://ejournal.seaninstitute.or.id/index.php/JMS/article/view/9025. Acesso em: 1 sep. 2026.