Mashudi. “Effect of Mother Trees and Cuttings Material Position on the Stool Plants to Shorea Leprosula Shoot Cuttings Growth”. Jurnal Penelitian Kehutanan Wallacea, vol. 8, no. 2, Aug. 2019, pp. 125-33, doi:10.18330/jwallacea.2019.vol8iss2pp125-133.