@book{88698,
	author = {Petrarca, Francesco, and Cosenza, Mario Emilio,},
	title = {Petrarch's Letters to Classical Authors},
	publisher = {Project Gutenberg,},
	year = {2015},
	address = {Salt Lake City, UT :},
	note = {Release date is 2015-01-03},
	url = {https://www.gutenberg.org/ebooks/47859}
}