Rianti Fela, M. Manullang, R. T. Siregar, and S. E. Damanik, “Pengaruh Program Water Resources And Irrigation Sector Management Project (WISMP) Terhadap Produktivitas Padi Sawah Di Kecamatan Siantar Kabupaten Simalungun”, JRP, vol. 1, no. 2, pp. 67–74, Aug. 2019, doi: 10.36985/43aevk56.