@book{74156,
	author = {Ricardo, David,},
	title = {On The Principles of Political Economy, and Taxation},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-07-31},
	url = {https://www.gutenberg.org/ebooks/33310}
}
