Lubis, R.E. and Lontoh, A.P. (2016) “Manajemen Panen Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Adolina, Serdang Bedagai, Sumatera Utara”, Buletin Agrohorti, 4(2), pp. 144–154. doi:10.29244/agrob.v4i2.15013.