The Sounds of the World's Languages

Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 978-0-631-19815-4. Nahhas, Ramzi W. (2007) Sociolinguistic Survey of Mpi in Thailand

of the International Phonetic Association, 33 (1): 103–107, doi:10.1017/S0025100303001191 Ladefoged, Peter; Maddieson, Ian (1996), The Sounds of the World's

University Park Press. Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 978-0-631-19815-4. Matthews, William

of Teachers of Italian. 21 (2): 72–82. doi:10.2307/475860. JSTOR 475860. Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages

nasals', in Greenberg (ed.) Universals of Language, pp 50-60. Ladefoged, Peter (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN 0-631-19814-8