@book{79279,
	author = {Duellman, William Edward,},
	title = {A Distributional Study of the Amphibians of the Isthmus of Tehuantepec, México},
	publisher = {Project Gutenberg,},
	year = {2011},
	address = {Salt Lake City, UT :},
	note = {Release date is 2011-12-30},
	url = {https://www.gutenberg.org/ebooks/38440}
}