@book{7721,
	author = {Andreoli, Thomas E. },
	title = {CECIL essentials of medicine},
	publisher = {W.B. Saunders ,},
	year = {1993 .},
	address = {Philadelphia :},
	edition = {3rd ed.},
	url = {https://books.google.com.pk/books?id=QbiNMQEACAAJ&dq=0721648126&hl=en&sa=X&redir_esc=y}
}