Daulay, Lalan Darham, Fahrurrozi Fahrurrozi, and Mukhtasar Mukhtasar. 2014. “Respon Bibit Salak Terhadap Pemberian Pupuk Daun”. Akta Agrosia 17 (2):125-34. https://ejournal.unib.ac.id/Agrosia/article/view/1090.