Biased? Depends Who You Ask. Ohio State University. (原始内容存档于2004-05-17). Hackett, Robert A.; Karlberg, Michael. Cancelling Each Other Out?: Interest Group
London: Pyramid Books, 1988. ISBN 1-85510-009-6. Goodrich, Francis, AlbertHackett and Frank Capra. It's a Wonderful Life: The Complete Script in its Original