Summer, Robert J. (23. II 2007.). Choral Masterworks from Bach to Britten: Reflections of a Conductor. Lanham, MD: The Scarecrow Press. ISBN0810859033. OCLC74988115. »Verdi revered Manzoni for this great contribution to his beloved Italy [a primer of the Italian language], and wished to find a way to thank him. His gift was the Manzoni Requiem.«
