Nathan, Muhammad, et al. “Efektivitas Pupuk Organik Cair Bawang Merah Dan Limbah Bawang Merah Terhadap Perubahan Sifat Kimia Tanah Dan Pertumbuhan Bawang Merah: Effectiveness of Red Onion Liquid Organic Fertilizer and Red Onion Waste on Changes in Soil Chemical Properties and Red Onion Growth”. Jurnal Ecosolum, vol. 12, no. 1, July 2023, pp. 114-27, doi:10.20956/ecosolum.v12i1.26545.