@book{38621,
	author = {Ballenger, William Lincoln, and Ballenger, Howard Charles,},
	title = {Diseases of the nose, throat and ear,},
	publisher = {Lea & Febiger,},
	year = {1947.},
	address = {Philadelphia,},
	edition = {9th ed., thoroughly rev.},
	note = {Several chapters written by various authors.}
}