Mualim, Leo, Sandra Arifin Aziz, and Maya Melati. “Kajian Pemupukan NPK Dan Jarak Tanam Pada Produksi Antosianin Daun Kolesom”. Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) 37, no. 1 (June 18, 2010). Accessed July 5, 2026. https://journal.ipb.ac.id/jurnalagronomi/article/view/1395.