TRIYANA, Elma; JAHRIZAL; ISBAH, Ufira. Analisis Persaingan Industri Plakat Berizin Di Kota Pekanbaru. Journal of Sustainable Entrepreneur Region Industry, [S. l.], v. 1, n. 1, p. 8–18, 2026. Disponível em: https://journal.ypmki.com/index.php/joseri/article/view/19. Acesso em: 11 oct. 2026.