@book{90028,
	author = {Ewald, Paul W. and ebrary, Inc.},
	title = {Evolution of infectious disease},
	publisher = {Oxford University Press,},
	year = {1994.},
	address = {Oxford ;},
	url = {https://ezproxy.taylors.edu.my/login?url=http://site.ebrary.com/lib/taylorscollege/Doc?id=10087164}
}