@book{109012,
	author = {Ryan, Kenneth J. and ebrary, Inc.},
	title = {Sherris medical microbiology},
	publisher = {McGraw-Hill,},
	year = {c2004.},
	address = {New York :},
	edition = {4th ed.},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10191891}
}