@book{3171,
	author = {Valacich, Joseph S. and George, Joey F.},
	title = {Modern systems analysis and design /},
	publisher = {Pearson Education Limited,},
	year = {c2017.},
	series = {Always learning,},
	address = {Harlow, Essex :},
	edition = {8th ed.},
	note = {Includes bibliographical references and index.},
	url = {http://ezproxybib.pucp.edu.pe:2048/login?url=http://www.ebooks7-24.com/?il=7427}
}