@book{21968,
	author = {Pratt, Philip J},
	title = {Database management concepts},
	publisher = {Cengage Learning},
	year = {2012},
	address = {Andover},
	edition = {7th ed.},
	note = {2675 27/03/2017 HBD17/6915 27/03/2017 Main Budget}
}