(1960). The worldmark encyclopedia of the nations: A practical guide to the geographic, historical, political, social, and economic status of all nations, their international relationships, and the United Nations system. New York: Worldmark Press : Harper & Brothers.
Παραπομπή Chicago StyleThe Worldmark Encyclopedia of the Nations: A Practical Guide to the Geographic, Historical, Political, Social, and Economic Status of All Nations, Their International Relationships, and the United Nations System. New York: Worldmark Press : Harper & Brothers, 1960.
Παραπομπή MLAThe Worldmark Encyclopedia of the Nations: A Practical Guide to the Geographic, Historical, Political, Social, and Economic Status of All Nations, Their International Relationships, and the United Nations System. New York: Worldmark Press : Harper & Brothers, 1960.