Rianti Fela, Manullang M, Siregar RT, Damanik SE. Pengaruh Program Water Resources And Irrigation Sector Management Project (WISMP) Terhadap Produktivitas Padi Sawah Di Kecamatan Siantar Kabupaten Simalungun. JRP [Internet]. 30 Agustus 2019 [dikutip 3 November 2025];1(2):67-74. Tersedia pada: https://jurnal.usi.ac.id/index.php/jrp/article/view/524