@book{560,
	author = {Floyd, Thomas L.},
	title = {Electronic devices :},
	publisher = {Prentice Hall,},
	year = {2012.},
	address = {Boston :},
	edition = {9th ed.},
	url = {https://books.google.com.pk/books?id=2D7lwAEACAAJ&dq=9780132549868&hl=en&sa=X&redir_esc=y}
}