Purba, Roberto, and Jenny Lastry Siregar. “Perguruan Tinggi Sebagai Agen Perubahan Melalui Social Entreprenuership”. Tour Abdimas Journal 2, no. 1 (January 31, 2023): 52–56. Accessed October 27, 2025. https://tourjurnal.akupuntour.com/index.php/tourabdimasjournal/article/view/44.