MIRNAWATI; DJULARDI, Ade; CIPTAAN, Gita. Role of Humic Acid in Improving the Nutrient Content and Quality of Fermented Palm Oil Sludge. Pakistan Journal of Nutrition, Pakistan, v. 16, n. 7, p. 538–543, 2017. DOI: 10.3923/pjn.2017.538.543. Disponível em: https://pjnonline.org/pjn/article/view/2504. Acesso em: 30 aug. 2025.