Inonu, I., N. S. Khodijah, and A. Supriadi. “Budidaya Pakchoy (Brassica Rapa L.) Di Lahan Tailing Pasir Bekas Penambangan Timah Dengan Amelioran Pupuk Organik Dan Pupuk NPK”. Jurnal Lahan Suboptimal : Journal of Suboptimal Lands 3, no. 1 (July 5, 2015). Accessed April 25, 2024. https://jlsuboptimal.unsri.ac.id/index.php/jlso/article/view/110.