1. Council TP (1848) Credit : timber piling council
2. Poulos HG, Davis EH (1980) Pile foundation analysis and design. Rainbow-Bridge Book Co., Canada
3. B. of I. Standard (1980) Code of practice for design and construction of pile foundation. 2911(June):1–31
4. A. S. R. R. Gopal Ranjan, “Basic and Applied Soil Mechanics,” p. 1223, 2007.
5. Blum H (1932) Bautechnik. Heft 5:1932