THE INFLUENCE OF PROMOTIONAL COST AGAINTS SALES VOLUME PRODUCT BATIK JAMBI SELARAS PINANG MASAK IN JAMBI CITY. Journal of Business Studies and Management Review, [S. l.], v. 1, n. 2, p. 52–55, 2018. DOI: 10.22437/jbsmr.v1i2.5350. Disponível em: https://www.online-journal.unja.ac.id/jbsmr/article/view/5350. Acesso em: 23 apr. 2026.