Marwanto, Marwanto, Nasiroh Nasiroh, Bambang G. Mucitro, and Merakati Handajaningsih. “Effects of Combined Application of Cow Manure And Inorganic Nitrogen Fertilizer on Growth, Yield and Nitrogen Uptake of Black Rice”. Akta Agrosia 21, no. 2 (December 31, 2018): 55–60. Accessed May 3, 2024. https://ejournal.unib.ac.id/Agrosia/article/view/6455.