IskandarI. 2005. Effect of Interlayer Cation Valence on Formation and Chemical Characteristics of Aluminumhydroxy-Vermuculite. Jurnal Ilmu Tanah dan Lingkungan. 7, 1 (Apr. 2005), 6-10. DOI:https://doi.org/10.29244/jitl.7.1.6-10.