Putri, Rahmi Hayati, and Sulistyani Budiningsih. “Competitive Advantages and Strategies of the Brown Sugar Industry in Purbalingga”. KnE Social Sciences 5, no. 7 (July 8, 2021): 134–143. Accessed April 27, 2024. https://knepublishing.com/index.php/KnE-Social/article/view/9329.