His The works of Dr. Thomas Campion, 1889 t.p. (Thomas Campion)
InU/3 cent. drama files (Usage: Thomae Campiani; Thomas Campian; M. Campion)
New Grove dict. of mus. WWW site, Aprl 11, 2006 (After John Dowland, he was the most prolific of the English lute-song composers with well over 100 songs to his name.)
New Grove dict. of mus. WWW site, Dec. 21, 2010 (English poet, composer, theorist and physician)
Grove music online, Sept. 17, 2015 (b. London, 12 Feb 1567; d. London, 1 March 1620)