OSUAGWU, Linus. Marketing Research Trends: Issues and Research Direction. International Journal of Business Studies, [S. l.], v. 5, n. 2, p. 63–75, 2021. DOI: 10.32924/ijbs.v5i2.163. Disponível em: https://ijbs.ipmi.ac.id/index.php/ijbs/article/view/163. Acesso em: 4 mar. 2026.