Dictionnaire des interprètes et de l'interprétation musicale au XXe siècle, c1982 (Rosen, Charles; b. 5-5-1927, New York; American pianist)
New York times WWW site, Dec. 10, 2012 (Charles Rosen; b. Charles Welles Rosen, May 5, 1927, Manhattan; d. there Sunday [Dec. 9, 2012], aged 85; pianist, polymath, and author whose National Book Award-winning volume The classical style illuminated the enduring language of Haydn, Mozart, and Beethoven)