Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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