Cecil Armstrong Gibbs Musica Classica Classical Music Dictionary article with short biography. http://www.karadar.net/Dictionary/gibbs.html

Gibbs, Cecil Armstrong (1889 - 1960) Biographical sentence and recommended recordings. http://www.hnh.com/composer/gibbs.htm

Gibbs, Cecil Armstrong (1889 - 1960), United Kingdom Biographical data, recommended CDs, books and sheet music, bibliography, and links to biographical essays from Dr. Estrella's Incredibly Abridged Dictionary of Composers. http://stevenestrella.com/composers/composerfiles/gibbs1960.html

Umberto Giordano Filmography linked to movies using or based on his compositions from the Internet Movie Database (IMDb). http://us.imdb.com/name/nm0320364/