SEBAYANG, L. . ASSESSMENT OF COMMODITIES AREA GAMBIER (Uncaria gambir Roxb.) IN PAKPAK BHARAT SCALE 1 : 50.000. Jurnal Online Pertanian Tropik, [S. l.], v. 2, n. 2, p. 102–109`, 2015. DOI: 10.32734/jopt.v2i2.2890. Disponível em: https://idjpcr.usu.ac.id/jpt/article/view/2890. Acesso em: 5 aug. 2025.