Siregar, A.Z. 2017. TABELA AND FISH FARMING ARE LOCAL WISDOMS ETHNIC SUMATERA FOR SUPPORTED ON SUSTAINABLE AGRICULTURE IN NORTH SUMATERA, INDONESIA. Jurnal Online Pertanian Tropik. 4, 2 (Aug. 2017), 140-148. DOI:https://doi.org/10.32734/jopt.v4i2.3080.