@book{247323,
	author = {Harrington, Jan L., and Harrington, Jan. L.},
	title = {Relational database design and implementation / },
	publisher = {Morgan Kaufmann/Elsevier,},
	year = {2016.},
	address = {Amsterdam ;},
	edition = {4th ed.},
	url = {http://www.sciencedirect.com/science/book/9780128043998}
}