“PENYUSUNAN MODEL SIMULASI TANAMAN JARAK (Richinus communis L.)CONSTRUCTION OF A CROP SIMULATION MODEL OF CASTOR OIL (Richinus communis L.)”, Agromet, vol. 18, no. 2, pp. 48–57, Dec. 2004, doi: 10.29244/j.agromet.18.2.48-57.