MLA

Beer, Kenneth E. The U. S. A. Answers : a Guide to Understanding. New York: U.S. and World Publications, 1961.

APA

Beer, K. E. (1961). The U. S. A. answers : a guide to understanding. New York: U.S. and World Publications.

Chicago

Beer, Kenneth E., The U. S. A. Answers: A Guide to Understanding. New York: U.S. and World Publications, 1961.