Bibiana Dho Tawa et al. 2026. KADAR NPK DAN KUALITAS PUPUK ORGANIK CAIR DARI KOMBINASI DAUN GAMAL/DAUN LAMTORO DENGAN PENAMBAHAN KOTORAN HEWAN RUMINANSIA/NON RUMINANSIA : Nutrient Content (NPK) and Quality of Liquid Organic Fertilizer Made from a Mixture of Gliricidia sepium and Leucaena leucocephala Leaves with Ruminant and Non Ruminant Manure Additions . SAINSTEK. 7, 1 (Jan. 2026), 30–52.