@book{1950,
	author = {Twain, Mark,},
	title = {Roughing it /},
	publisher = {Reader's Digest Association,},
	year = {c1994.},
	series = {The world's best reading},
	address = {Pleasantville, N.Y. :},
	url = {http://www.gutenberg.org/files/3177/3177-h/3177-h.htm}
}