Yunus Amar M. The influence of product differentiation strategy on operational performance at Small and Medium Enterprises (SMEs) in South Sulawesi, Indonesia. JEBAV [Internet]. 2015 Dec. 30 [cited 2026 Feb. 11];18(3):343-50. Available from: https://journal.perbanas.ac.id/index.php/jebav/article/view/505