Grant, Barry Keith (1995). "Purple Passages or Fiestas in Blue? Notes Toward an Aesthetic of Vocalese". In Gabbard, Krin (ed.). Representing Jazz. Durham: Duke University Press. pp. 285–304. ISBN0-8223-1579-3. OCLC31377030.
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Grant, Barry Keith (1995). "Purple Passages or Fiestas in Blue? Notes Toward an Aesthetic of Vocalese". In Gabbard, Krin (ed.). Representing Jazz. Durham: Duke University Press. pp. 285–304. ISBN0-8223-1579-3. OCLC31377030.