Grove music online, June 13, 2013 (Mitchell, Donald (Charles Peter); born February 6, 1925, London; English musicologist, publisher, and administrator)
Faber Music website, accessed 18.12.2017 (Donald Mitchell (1925-2017 (Sep. 28. 2017). Founded Faber Music in 1965, company's first managing director , then chair from 1977 to 1988, then president until 1995)