@book{86013,
	author = {Langsam, Walter Consuelo, and Mitchell, Otis C.,},
	title = {The world since 1919 /},
	publisher = {Macmillan,},
	year = {1971},
	address = {New York :},
	edition = {8th ed.},
	note = {First-6th ed. published under title: The world since 1914.}
}