@book{2136,
	author = {George, Ronald B.  and Light, Richard W. (Editor)},
	title = {Chest medicine essensial of pulmonary and critical care medicine},
	publisher = {WWL ,},
	year = {1995 .},
	address = {Baltimore :},
	edition = {3rd ed.},
	note = {Includes bibliographic references and index.},
	url = {https://books.google.com.pk/books?id=ZzlX2zJMbdgC&printsec=frontcover&dq=Chest+medicine+essentials+of+pulmonary+and+critical+care+medicine&hl=en&sa=X&redir_esc=y#v=onepage&q=Chest%20medicine%20essentials%20of%20pulmonary%20and%20critical%20care%20medicine&f=false}
}