ERVAYENRI, ERVAYENRI. “DAMPAK PENCEMARAN MINYAK BUMI TERHADAP TANAMAN KELAPA SAWIT (Elais Guineensis)”. Jurnal Ilmiah Pertanian, vol. 4, no. 1, Aug. 2007, pp. 19-25, https://doi.org/10.31849/jip.v4i1.1330.