Sipayung, Hendri, 		Amazihono, Kadirman, AND 		Manurung, Agnes.
" PENGARUH PEMBERIAN PUPUK KANDANG AYAM DAN PEMBERIAN PUPUK UREA NON SUBSIDI TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT (Elaeis guineensis Jacq.) DI PRE NURSERY" <em>JURNAL AGROTEKDA</em> [Online], Volume 5 Number 1 (31 March 2021)