Ramli, R. and Arzad, F. H. (2024) “Pengaruh Kombinasi Pupuk Kandang Sapi dan Pupuk NPK terhadap Pertumbuhan dan Hasil Tanaman Kubis (Brassica oleraceae L.): The Combination Effects of Cow Manure and NPK Fertilizer on Cabbage’ (Brassica oleraceae L.) Growth and Yield”, Gontor Agrotech Science Journal, 10(1), pp. 93–100. doi: 10.21111/agrotech.v10i1.12421.