@book{9697,
	author = {Valacich, Joseph S},
	title = {Essentials Essentials of system analysis & design / Joseph S. Valacich, Joey F. George , Jeffrey A. Hoffer},
	publisher = {Upper Saddle River, NJ : Prentice Hall, 2001.},
	address = {Upper Saddle River, NJ : Prentice Hall, 2001.}
}