O'Brien, G. (1990). Brian Friel. Twayne Publishers.
Chicago Style (17th ed.) CitationO'Brien, George. Brian Friel. Boston: Twayne Publishers, 1990.
MLA (9th ed.) CitationO'Brien, George. Brian Friel. Twayne Publishers, 1990.
Warning: These citations may not always be 100% accurate.