Crystal, D. (1975) 'Prosodic features and linguistic theory', in The English Tone of Voice, Edward Arnold Crystal, D. and R. Quirk (1964) Systems of Prosodic
Dikanesdi (Lexicon) Tone and Pitch Accent in Cherokee Nouns(pdf) Echota Tsalagi Language Project(页面存档备份,存于互联网档案馆) Exploration of the Red River of Louisiana,