Ahmad, A., M. B. Saleh, and T. Rusolono. “Model Spasial Deforestasi Di KPHP Poigar, Provinsi Sulawesi Utara”. Jurnal Penelitian Kehutanan Wallacea, vol. 5, no. 2, Aug. 2016, pp. 159-6, doi:10.18330/jwallacea.2016.vol5iss2pp159-169.