JulyanB., QadirA., and Supijatno.. “Pengolahan Tandan Benih Kelapa Sawit (Elaeis Guiinensis Jacq) Di Pusat Penelitian Kelapa Sawit Marihat, Sumatera Utara”. Buletin Agrohorti, Vol. 5, no. 3, Nov. 2017, pp. 365-72, doi:10.29244/agrob.v5i3.16482.