APA সাইটেশন

(1972). The United Nations: Past , present and future. The Free Press.

শিকাগো স্টাইলে সাইটেশন

The United Nations: Past , Present and Future. New York: The Free Press, 1972.

এমএলএ সাইটেশন

The United Nations: Past , Present and Future. The Free Press, 1972.