1. Widowson J.P., Biological Resources Utilization Local For Acid Mine Drainage Passive Treatement, (2007).
2. Fripp J., J. ERDC TN-EMRRP-SR-14, 1–7 (2000)
3. Rochyani N., Ibrahim E., Faizal M., And Ngudiantoro . Unsri.E J., 158–164 (2014)
4. Hakim M., Fundamentals of Soil Science. (1986)