@book{87262,
	author = {Marx, Karl, and Stone, N. I.},
	title = {A Contribution to the Critique of Political Economy},
	publisher = {Project Gutenberg,},
	year = {2014},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/A_Contribution_to_the_Critique_of_Political_Economy},
	url = {https://www.gutenberg.org/ebooks/46423}
}