@book{191698,
	author = {Twain, Mark, and De Voto, Bernard,},
	title = {The portable Mark Twain /},
	publisher = {Penguin Books,},
	year = {1977.},
	series = {The Viking Portable library},
	address = {New York :},
	note = {Reprint of the 1946 ed. published by Viking, New York.},
	url = {http://www.loc.gov/catdir/enhancements/fy1209/76048900-b.html}
}