@book{756,
	author = {Rosen, Kenneth.},
	title = {Discrete mathematics and its applications.},
	publisher = {McGraw Hill,},
	year = {2011.},
	address = {New Delhi :},
	edition = {7th ed.},
	url = {https://bkbirlacollegekalyan.knimbus.com/portal/v2/default/home}
}