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Pike, Kenneth L. (1948). Tone languages: A technique for determining the number and type of pitch contrasts in a language, with studies in tonemic substitution and fusion. Ann Arbor: The University of Michigan Press. (Reprinted 1972, ISBN 0-472-08734-7).
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Haudricourt, André-Georges (1961). "Bipartition et tripartition des systèmes de tons dans quelques langues d'Extrême-Orient". Bulletin de la Société de Linguistique de Paris. 56 (1): 163–180.
Haudricourt, André-Georges (1972). "Two-way and Three-way Splitting of Tonal Systems in Some Far Eastern Languages". 出自 Jimmy G. Harris; Richard B. Noss (編). Tai phonetics and phonology(PDF). Christopher Court翻譯. Bangkok: Central Institute of English Language, Mahidol University. pp.58–86. 原著(PDF)喺2022-01-22歸檔. 喺2021-02-15搵到. {{cite book}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help) Translation of Haudricourt (1961).
Hyman, Larry M. (2007a). There is no pitch-accent prototype. 2007 LSA Meeting. Anaheim, CA.
Hyman, Larry M. (2007b). "DRAFT: Tone: Is it Different?". 出自 John Goldsmith; Jason Riggle; Alan Yu (編). The Handbook of Phonological Theory(PDF) (第2版). Blackwell. 原著(PDF)喺2012-07-28歸檔 –透過UC Berkeley Phonology Lab Annual Report (2007).
Kingston, John (2005). "The phonetics of Athabaskan tonogenesis". 出自 Hargus, Sharon; Rice, Keren (編). Athabaskan Prosody. Amsterdam: John Benjamins Publishing. pp.137–184. ISBN9789027285294. 原著喺2022-02-09歸檔. 喺2022-02-09搵到. {{cite book}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help)
Kingston, John (2011). "Tonogenesis"(PDF). 出自 Marc van Oostendorp; Colin J Ewen; Elizabeth Hume; Keren Rice (編). The Blackwell companion to phonology, Volume 4: Phonological interfaces. Chichester: Wiley-Blackwell. pp.2304–2333. 原著(PDF)喺2021-12-10歸檔. 喺2022-02-09搵到. {{cite book}}: Unknown parameter |dead-url= ignored (|url-status= suggested) (help)
Maddieson, Ian (1978). "Universals of tone". 出自 Greenberg, J. H. (編). Universals of human language: Phonology.第2卷. Stanford: Stanford University Press.