surono, Surono, Tulus Suryanto, and Erike Anggraini. “Comparing Cost Leadership Strategy With Differentiation Strategy towards Firm Performance on Jakarta Islamic Index”. Journal The Winners 21, no. 1 (March 26, 2020): 35-41. Accessed November 21, 2024. https://journal.binus.ac.id/index.php/winners/article/view/5963.