@book{64400,
	author = {Unknown},
	title = {Old Mother Hubbard and Her Dog},
	publisher = {Project Gutenberg,},
	year = {2007},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://en.wikipedia.org/wiki/Old_Mother_Hubbard},
	url = {https://www.gutenberg.org/ebooks/23348}
}