@book{173,
	author = {Coronel, Carlos. and Morris, Steven.},
	title = {Database systems :},
	publisher = {Cengage Learning ;},
	year = {c2017.},
	address = {Australia :},
	edition = {12th ed.},
	note = {Previous edition: ©2015.

Includes Glossary and Index.},
	url = {http://www.dawsonera.com/guard/protected/dawson.jsp?name=London%20Metropolitan%20University&dest=http://www.dawsonera.com/depp/reader/protected/external/AbstractView/S9781473745988}
}