Siringo-ringo, Culina, 		Manurung, Agnes, AND 		Sirait, Bilter.
" PENGARUH PEMBERIAN PUPUK KANDANG AYAM DAN STRESS AIR TERHADAP PERTUMBUHAN BIBIT KELAPA SAWIT (ELAEIS GUINEENSIS JACQ.) VARIETAS TENERA DI PRE-NURSERY" <em>Jurnal Darma Agung</em> [Online], Volume 29 Number 2 (16 August 2021)