sirine, hani -, Elia Elia Ardyan, and Barnabas Theodore Pistos Utomo Kaya. “Model Value Chain Untuk Social Entrepreneurship”. AJIE (Asian Journal of Innovation and Entrepreneurship) 4, no. 2 (July 4, 2019): 107–117. Accessed December 5, 2025. https://journal.uii.ac.id/ajie/article/view/12866.