Rosa, R.N. and Zaman, S. 2017. Pengelolaan Pembibitan Tanaman Kelapa Sawit (Elais guineensis Jacq.) Di Kebun Bangun Bandar, Sumatera Utara. Buletin Agrohorti. 5, 3 (Nov. 2017), 325–333. DOI:https://doi.org/10.29244/agrob.v5i3.16470.