@book{94369,
	author = {Ibberson, Joseph E., and Aughenbaugh, J. E.},
	title = {Common trees of Pennsylvania},
	publisher = {Project Gutenberg,},
	year = {2016},
	address = {Salt Lake City, UT :},
	note = {Release date is 2016-11-16},
	url = {https://www.gutenberg.org/ebooks/53535}
}