APA সাইটেশন

(1969). U.S book of facts statistics and information. Essendess.

শিকাগো স্টাইলে সাইটেশন

U.S Book of Facts Statistics and Information. New York: Essendess, 1969.

এমএলএ সাইটেশন

U.S Book of Facts Statistics and Information. Essendess, 1969.