NUGROHO, Tri. PERAN PENYULUH PERTANIAN DALAM PELESTARIAN ALAM. Jurnal Ilmu-Ilmu Pertanian, [S. l.], v. 3, n. 2, p. 100–111, 2007. Disponível em: https://jiip.polbangtanyoma.ac.id/index.php/jiip/article/view/243. Acesso em: 8 feb. 2025.