@book{19250,
	author = {Elton, G. R},
	title = {The practice of history},
	publisher = {Collins},
	year = {1969, c1967.},
	series = {The Fontana library},
	address = {[London]},
	note = {Originalmente publicado: B68-00171, Sydney : Sydney U.P. ; London: Methuen, 1967.}
}