1. Official Methods of Analysis (1990) Method 949.12;AOAC,1990
2. Standard Methods for the Examination of Water and Wastewater;APHA,2005
3. Coagulation and Flocculation in Water and Wastewater Treatment;Bratby,2016
4. Determination of permeability by the constant-head method. British standard methods of test for soils for civil engineering purposes,1990
5. Determination by mass-loss on ignition. British standard methods of test for soils for civil engineering purposes,1990