Azwar, T.K.D., Sitepu, R., Barus, U.M. and Wau, H.S.M. 2026. Perlindungan Hak Ekonomi Petani Melalui Pendaftaran Indikasi Geografis: Studi pada Komoditas Alpukat dan Markisa di Kabupaten Langkat: Protection of Farmers’ Economic Rights through Geographical Indication Registration: A Study on Avocado and Passion Fruit Commodities in Langkat Regency. Jurnal Pengabdian dan Pengembangan Masyarakat Indonesia. 5, 1 (May 2026), 116–126. DOI:https://doi.org/10.56303/jppmi.v5i1.1056.