@book{71907,
	author = {Cajori, Florian,},
	title = {A History of Mathematics},
	publisher = {Project Gutenberg,},
	year = {2010},
	address = {Salt Lake City, UT :},
	note = {Release date is 2010-01-24},
	url = {https://www.gutenberg.org/ebooks/31061}
}