1. Elton D. J. (2001). Soil magic Geotech. Spec. Publ. No. 114 ASCE Reston Va.
2. Hoffer T. B. (2004). “Employment sector salaries publishing and patenting activities of S&E doctorate holders.” InfoBrief NSF 04-328 Div. of Science Resources Statistics National Science Foundation Arlington Va.
3. Institution of Civil Engineers (ICE). (2003). Routes to membership—Chartered Civil Engineer ICE 2001 London.
4. Hong Kong Institution of Engineers. (2004). Routes to membership Membership Information Booklet M3 Hong Kong Special Administrative Region China.
5. Professional Registration of Engineering Faculty