A. K. Zaidey, A. Arifin, I. Zahari, A. H. Hazandy, M. H. Zaki, H. Affendy, M. E. Wasli, Y. Khairul Hafiz, J. Shamshuddin and M. Nik Muhamad
International Journal of Soil Science 5 ( 3 ): 112 - 130 , 2010