@book{100416,
	author = {Keynes, John Neville,},
	title = {Studies and Exercises in Formal Logic},
	publisher = {Project Gutenberg,},
	year = {2019},
	address = {Salt Lake City, UT :},
	note = {Release date is 2019-05-24},
	url = {https://www.gutenberg.org/ebooks/59590}
}