↑"Susan Boyle". Allmusic. Diakses tanggal 14 September 2009.
↑Scottish genealogist Caroline Gerard found her official birth entry at New Register House in Edinburgh Susan Boyle's Astrology Horoscope
↑Boyle "just turned 48". "Suddenly Susan!", People, 4 May 2009, p. 52. As is common with magazines, the issue was published about 10 days before its cover date, implying that her birth date was sometime in April 1961.
