1. Standard Specifications for Highway Materials and Methods of Sampling and Testing;American Association of State Highway Officials (A.A.S.H.O.),1966
2. Wetting and drying tests of compacted soil-cement mixtures;American Society for Testing;Am. Soc. Testing Materials,1958
3. A study on the engineering properties of lateritic gravels of Ghana;Bhatia,1970
4. Soil-cement;Bhatia,1968
5. Ghana Soils;Brammer,1962