@book{78115,
	author = {Young, Charles A.},
	title = {A Textbook of General Astronomy for Colleges and Scientific Schools},
	publisher = {Project Gutenberg,},
	year = {2011},
	address = {Salt Lake City, UT :},
	note = {Release date is 2011-08-30},
	url = {https://www.gutenberg.org/ebooks/37275}
}