APA (7th ed.) Zitazioa

Palmer, A. (1974). Age of optimism (Revised and expanded edition.). Newsweek Books.

Chicago Style (17th ed.) Zitazioa

Palmer, Alan. Age of Optimism. Revised and expanded edition. New York: Newsweek Books, 1974.

MLA (9th ed.) Zitazioa

Palmer, Alan. Age of Optimism. Revised and expanded edition. Newsweek Books, 1974.