THE EFFECT OF MARKETING DUALITY ON PERFORMANCE: USING A RESPONSE SURFACE APPROACH TO OVERCOME EMPIRICAL BARRIERS. Journal of Jabar Economic Society Networking Forum, [S. l.], v. 1, n. 3, p. 49–65, 2024. Disponível em: https://jesocin.com/index.php/jesocin/article/view/17.. Acesso em: 28 jun. 2026.