@book{4228,
	author = {Worden, Robert L. and Historical Evaluation and Research Organization.},
	title = {Mongolia},
	publisher = {Federal Research Division, Library of Congress},
	year = {1991.},
	series = {DA pam},
	address = {Washington, D.C.},
	edition = {2nd ed.},
	note = {"Research completed, June 1989."}
}