Edmund Hillary, Edmund Hillary (Sir.), Desmond Doig (1962). “High in the thin cold air: the story of the Himalayan Expedition, led by Sir Edmund Hillary, sponsored by World Book Encyclopedia”
"French Music: From the Death of Berlioz to the Death of Fauré". Book by Martin Cooper (p. 136), 1951; later quoted in "Debussy and Wagner", book by Robin Holloway (p. 207), 1979.