@book{74169,
	author = {Langer, William L. and Gleason, S. Everett},
	title = {The challenge to isolation, 1937-1940 /},
	publisher = {Published for the Council on Foreign Relations by Harper},
	year = {1952.},
	series = {Their The world crisis and American foreign policy ;},
	address = {New York :},
	edition = {1st ed.}
}