@book{69,
	author = {Hayt,W H and Buck, John A},
	title = {Engineering electromagnetics},
	publisher = {Tata McGraw Hill,},
	year = {2006},
	address = {New Delhi :},
	edition = {7Th ed.},
	url = {https://books.google.com.pk/books?id=w976VVbELfIC&printsec=frontcover&dq=engineering+electromagnetics+by+william+hayt+7th+edition&hl=en&sa=X&sqi=2&ved=0ahUKEwj00L6Kg8LLAhXqJZoKHZ-OBs4Q6AEIKjAD#v=onepage&q&f=false}
}