RIANTI FELA; MANULLANG, M.; SIREGAR, R. T.; DAMANIK, S. E. Pengaruh Program Water Resources And Irrigation Sector Management Project (WISMP) Terhadap Produktivitas Padi Sawah Di Kecamatan Siantar Kabupaten Simalungun. Jurnal Regional Planning, [S. l.], v. 1, n. 2, p. 67–74, 2019. DOI: 10.36985/jrp.v1i2.582. Disponível em: https://jurnal.usi.ac.id/index.php/regionalplanning/article/view/582. Acesso em: 3 jul. 2024.