@book{42180,
	author = {United States. Central Intelligence Agency},
	title = {The 1991 CIA World Factbook},
	publisher = {Project Gutenberg,},
	year = {1992},
	address = {Salt Lake City, UT :},
	note = {Release date is 1992-02-01},
	url = {https://www.gutenberg.org/ebooks/25}
}