Daulay, Lalan Darham, Fahrurrozi Fahrurrozi, and Mukhtasar Mukhtasar. 2014. “Respon Bibit Salak Terhadap Pemberian Pupuk Daun”. Akta Agrosia 17 (2):125-34. https://doi.org/10.31186/aa.17.2.125-134.