Reference

1.	Makhlof H., Youssef M. Wagdy and Ismael S., "E-commerce and e-government", Ain Shams, 2011.

2.	Gary Schneider, Electronic Commerce, 2008.
	Efraim Turban, Jae Kyu Lee, Dave KIng, and Judy McKay, Electronic Commerce 2008 (Electronic Commerce) (Hardcover - Oct 19, 2007).

3.	Darrel Ince, Developing Distributed and E-Commerce Applications, (2001).