Setiawan, T., and S. P. Harianto. “Study on the Productivity of Grass Forage As a Feed Source for Sambar Deer (Cervus Unicolor) in Deer Captivity of PT. Gunung Madu Plantations”. Jurnal Sylva Lestari, vol. 6, no. 2, June 2018, pp. 16-21, doi:10.23960/jsl2616-21.