1. ANOVA Test.
http://www.statisticshowto.com/probability-and-statistics/hypothesis-testing/anova/
. Accessed on 3 Apr 2018.
2. Antolik, T. K., & Fougeron, C. (2013). Consonant distortion in dysarthria due to Parkinson’s disease, amyotrophic lateral sclerosis and cerebellar ataxia. In INTERSPEECH, pp. 2152–2156.
3. Chodroff, E., & Wilson, C. (2014). Burst spectrum as a cue for the stop voicing contrast in American English. Journal of Acoustical Society of America, 136(5), 2762–2772.
4. Fry, D. B. (2009). Acoustic phonetic. Cambridge: Cambridge Universtiy Press.
5. Jurafsky, D., & Martin, J. H. (2009). Speech and language processing. Upper Saddle River: Prentice Hall.