Library of Congress Country Studies Leuchars, Chris; , Greenwood Press, 2002. ISBN 0-313-32365-8 Scheina, Robert; , Brassey's, 2003. ISBN 1-57488-450-6 Whigwham, Thomas; , University of Nebraska Press, 2002. Fuglestad, Finn. . Cappelen akademisk forlag, 1994.