@book{93673,
	author = {Girard, Roselle M., and Harris, Bill M.},
	title = {Texas Rocks and Minerals: An Amateur's Guide},
	publisher = {Project Gutenberg,},
	year = {2016},
	address = {Salt Lake City, UT :},
	note = {Release date is 2016-08-18},
	url = {https://www.gutenberg.org/ebooks/52839}
}