References
Ball,
M. J. & Rahilly, J. (2000).
Phonetics: The science of speech. Great
Britain: MPG Books Ltd.
Ball,
M. J. (1989). 
Phonetics for speech pathology. London Whurr. Publisher Ltd.
Catford J. C. (2001). A practical introduction to phonetics. New York: Oxford University Press.
International
Phonetic Association. (1999).
Handbook of the international phonetic
association: A guide to the use of the international phonetic alphabet.
UK: Cambridge University Press.
Ladefoged
P. (2002). 
Vowels and consonants: An introduction to the sounds of
languages. Oxford: Blackwell Publishers Ltd.
Ladefoged,
P. & Maddieson, I. (1996).
The sounds of the world’s languages.
Oxford: Basil Blackwell Publisher Ltd.
Ladefoged,
P. (2005). 
A course in phonetics. (4th ed.). New York: Harcourt Brace College
Publishers.
Pullum,
G. K. & Ladusaw W. A. (1986). 
Phonetic symbol guide. Chicago:
University of Chicago Press.
Small
L. H. (1998).
Fundamentals of phonetics: A practical guide to students.
MA: Allyn & Bacon Publishers.
-Home-