Peni, P., N. Narimo, and R. J. Putri. “Biotransformation Studies of Agricultural Nitrogen Pollutants in Keduang Watershed”. Jurnal Riset Teknologi Pencegahan Pencemaran Industri, vol. 9, no. 2, Nov. 2018, pp. 21-29, doi:10.21771/jrtppi.2018.v9.no2.p21-29.