@book{54156,
	author = {Martin, Edward A.},
	title = {The Story of a Piece of Coal: What It Is, Whence It Comes, and Whither It Goes},
	publisher = {Project Gutenberg,},
	year = {2004},
	address = {Salt Lake City, UT :},
	note = {Release date is 2004-06-28},
	url = {https://www.gutenberg.org/ebooks/12762}
}