References
- Ball, M. J., Howard, S., & Miller, K. (2017). Revisions to the extIPA chart. Journal of the International Phonetic Association, 1–10. doi:10.1017/S0025100317000147 (early online).
- Ball, M. J., & Müller, N. (2005). Phonetics for communication disorders. Englewood Cliffs, NJ.: Erlbaum.
- Ball, M. J., Rahilly, J., & Lowry, O. (in preparation). Phonetics for speech pathology (3rd ed.). Sheffield: Equinox.
- Delattre, P., & Freeman, D. (1968). A dialect study of American r’s by x-ray motion picture. Language, 44, 29–68.
- Espy-Wilson, C. (2004). Articulatory strategies, speech acoustics and variability. Proceedings of sound to sense: fifty+ years of discoveries in speech communication, B62–B76.
- Foulkes, P., & Docherty, G. J. (2000). Another chapter in the story of /r/: “labiodental” variants in British English. Journal of Sociolinguistics, 4, 30–59.
- IPA. (1999). Handbook of the International Phonetic Association. Cambridge: Cambridge University Press.
- IPA. (2015). IPA Chart. Retrieved from http://www.internationalphoneticassociation.org/content/ipa-chart Accessed 22 April 2017.
- Laver, J. (1994). Principles of phonetics. Cambridge: Cambridge University Press.
- Mielke, J., Baker, A., & Archangeli, D. (2010). Variability and homogeneity in American English /ɻ/allophony and /s/retraction. In C. Fougeron, B. Kühnert, M. D’ Imperio, & N. Vallée (Eds.), Laboratory Phonology 10 (pp. 699–730). Berlin: de Gruyter Mouton, Berlin.
- Müller, N., Ball, M. J., & Rutter, B. (2008). An idiosyncratic case of /r/disorder: application of principles from systemic phonology and systemic functional linguistics. Asia-Pacific Journal of Speech, Language and Hearing, 11, 269–281.
- PRDS. (1983). The phonetic representation of disordered speech. London: King’s Fund.
- Shriberg, L., Fourakis, M., Hall, S., Karlsson, H., Lohmeier, H., McSweeny, J., … Wilson, D. (2010). Extensions to the speech disorders classification system (SDCS). Clinical Linguistics and Phonetics, 24, 795–824.
- Shriberg, L., & Kwiatkowski, J. (1994). Developmental and phonological disorders I: a clinical profile. Journal of Speech and Hearing Research, 37, 1100–1126.
- Tiede, M., Boyce, S. E., Holland, C., & Chou, A. (2004). A new taxonomy of American English /r/using MRI and ultrasound. Journal of the Acoustical Society of America, 115, 2633–2634.
- Twist, A., Baker, A., Mielke, J., & Archangeli, D. (2007). Are ‘covert’ /r/allophones really indistinguishable? Selected Papers from NWAV 35. University of Pennsylvania Working Papers in Linguistics, 13(2), article 16.
- Westbury, J. R., Hashi, M., & Lindstrom, M. J. (1998). Differences among speakers in lingual articulation for American English /r/. Speech Communication, 26, 203–226.
- Zhang, Z., Boyce, S., Espy-Wilson, C., & Tiede, M. (2003). Acoustic strategies for production of American “retroflex” /r/. Proceedings of the 15th International Congress of Phonetic Sciences. Barcelona, Spain: Universitat Autonòma de Barcelona.
- Zhou, X., Espy-Wilson, C., Boyce, S., Tiede, M., Holland, C., & Choe, A. (2008). A magnetic resonance imaging-based articulatory and acoustic study of “retroflex” and “bunched” American English /r/. Journal of the Acoustical Society of America, 123, 4466–4481.