@book{42169,
	author = {United States. Central Intelligence Agency},
	title = {The 1990 CIA World Factbook},
	publisher = {Project Gutenberg,},
	year = {1991},
	address = {Salt Lake City, UT :},
	note = {Release date is 1991-04-01},
	url = {https://www.gutenberg.org/ebooks/14}
}