@book{225500,
	author = {Shelly, Gary B. and Rosenblatt, Harry J.},
	title = {Systems analysis and design},
	publisher = {Cengage Course Technology},
	year = {c2012.},
	series = {Shelly Cashman series},
	address = {Boston, MA},
	edition = {9th ed.},
	note = {Includes index.}
}