UPBOFF, Norman. THE SYSTEM OF RICE INTENSIFICATION (SRI) AS A SYSTEM OF AGRICULTURAL INNOVATION. Jurnal Ilmu Tanah dan Lingkungan, [S. l.], v. 10, n. 1, p. 27–40, 2008. DOI: 10.29244/jitl.10.1.27-40. Disponível em: https://journal.ipb.ac.id/jtanah/article/view/29509. Acesso em: 24 dec. 2025.