Indrajaya, Yonky. “Daur Optimal Hutan Tanaman Sengon Dalam Proyek Aforestasi: Review Hasil Penelitian Suharlan 1975”. Jurnal Penelitian Kehutanan Wallacea, vol. 6, no. 2, Aug. 2017, pp. 147-56, doi:10.18330/jwallacea.2017.vol6iss2pp147-156.