Tranggono, Didiek, Praja Firdaus Nuryananda, and Andre Yusuf Trisna Putra. “ABCD Model Implemented to Underdeveloped Villages in Trenggalek Regency”. Nusantara Science and Technology Proceedings (May 18, 2020): 225–230. Accessed July 31, 2025. https://nstproceeding.com/index.php/nuscientech/article/view/189.