Bronson, Fred. "Silly Love Songs", from The Billboard Book of Number One Hits; p. 436; Billboard Books, 2003. ISBN978-0-8230-7677-2. Retrieved on 3 June 2009.
However, McCartney played a solo version of "Let It Be", on piano, at Nottingham. Paul McCartney biographyArchived 10 December 2006 at the Wayback Machine(2003). MPL Communications. Retrieved: 11 December 2006.
However, McCartney played a solo version of "Let It Be", on piano, at Nottingham. Paul McCartney biographyArchived 10 December 2006 at the Wayback Machine(2003). MPL Communications. Retrieved: 11 December 2006.