Spitz. The Beatles: The Biography. Little, Brown and Company (New York). 2005. ISBN 1-84513-160-6. The BeatlesAnthology. The BeatlesAnthology (DVD). Apple
请检查|date=中的日期值 (帮助) The Beatles. The BeatlesAnthology. San Francisco: Chronicle Books. 2000. ISBN 0-8118-2684-8. The Beatles. The BeatlesAnthology (DVD). Apple