APA সাইটেশন

Warren, S. (1964). President as world leader. Scientific book agency.

শিকাগো স্টাইলে সাইটেশন

Warren, Sidney. President as World Leader. Calcutta: Scientific book agency, 1964.

এমএলএ সাইটেশন

Warren, Sidney. President as World Leader. Scientific book agency, 1964.