Bibliography
- ASTM, C. (1958). ASTM Standards. Philadelphia: American Society for Testing Materials.
- Bowles, J. E. (1992). Engineering properties of soils and their measurement. McGraw-Hill, Inc.
- Das, B. M., and Sobhan, K. (2013). Principles of geotechnical engineering. Cengage learning.
- Das, B. M. (2002). Soil Laboratory Manual, Oxford University Press.
- Reddy, K. R. (2002). Engineering Properties of Soils Based on Laboratory Testing, University of Illinois at Chicago.