@book{72779,
	author = {Engels, Friedrich, and Lewis, Austin,},
	title = {Landmarks of Scientific Socialism: "Anti-Duehring"},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-04-09},
	url = {https://www.gutenberg.org/ebooks/31933}
}