@book{Enfield2014,
author = {Enfield, N.J.},
year = {2014},
isbn = {978-3-944675-72-5 (Hardcover)},
isbn = {978-3-944675-73-2 (Softcover)},
isbn = {978-1-523743-76-6 (Softcover US)},
language = {eng},
copyright = {http://creativecommons.org/licenses/by/4.0/},
title = {Natural causes of language},
url = "http://dx.doi.org/10.17169/FUDOCS_document_000000021399",
}