Purba, Arief Marizki, Yofiendi Indah Indainanto, and Citra Safira. “Policy Communication in Developing Frankincense Commodity in Humbang Hasudutan Regency”. Journal of Peasants’ Rights 2, no. 2 (July 28, 2023): 6–10. Accessed September 10, 2025. https://idjpcr.usu.ac.id/jpr/article/view/13244.