@book{229799,
	author = {Hunter, David J.},
	title = {Essentials of discrete mathematics /},
	publisher = {Jones and Bartlett Learning,},
	year = {2017.},
	address = {New Delhi :},
	edition = {3rd,},
	url = {http://www.loc.gov/catdir/toc/ecip0828/2008040794.html}
}