@book{130518,
	author = {Villa, Antonio.},
	title = {A guide to Puerto Rico},
	publisher = {Modern Guides Co.},
	year = {c1989.},
	series = {World travel series},
	address = {San Juan, P.R.},
	edition = {[4th ed., updated].},
	note = {Cover title: Puerto Rico, St. Thomas travel guide.}
}