APA (7th ed.) Citation

O'Brien, F. (1974). The poor mouth: A bad story about the hard life. Viking Press.

Chicago Style (17th ed.) Citation

O'Brien, Flann. The Poor Mouth: A Bad Story About the Hard Life. New York: Viking Press, 1974.

MLA (9th ed.) Citation

O'Brien, Flann. The Poor Mouth: A Bad Story About the Hard Life. Viking Press, 1974.

Warning: These citations may not always be 100% accurate.