@book{100706,
	author = {Ball, Alice Eliza, and Horsfall, R. Bruce},
	title = {Bird Biographies},
	publisher = {Project Gutenberg,},
	year = {2019},
	address = {Salt Lake City, UT :},
	note = {"An introduction to 150 common land birds of the eastern United States."},
	url = {https://www.gutenberg.org/ebooks/59880}
}