Itsvowel backnessisfront,which means the tongue is positioned forward in the mouth without creating a constriction that would be classified as aconsonant.
It isunrounded,which means that the lips are not rounded.
Bet Hashim, Suzanna; Brown, Adam (2000), "The [e] and [æ] vowels in Singapore English", in Brown, Adam; Deterding, David; Ling, Low Ee Ling (eds.),The English Language in Singapore: Research on Pronunciation,Singapore: Singapore Association for Applied Linguistics, pp. 84–92,ISBN981-04-2598-8
Dankovičová, Jana (1999), "Czech",Handbook of the International Phonetic Association: A guide to the use of the International Phonetic Alphabet,Cambridge: Cambridge University Press, pp. 70–74,ISBN0-521-65236-7
Dum-Tragut, Jasmine (2009),Armenian: Modern Eastern Armenian,Amsterdam: John Benjamins Publishing Company
Engstrand, Olle (1999), "Swedish",Handbook of the International Phonetic Association: A Guide to the usage of the International Phonetic Alphabet.,Cambridge: Cambridge University Press, pp. 140–142,ISBN0-521-63751-1
Fast Mowitz, Gerhard (1975),Sistema fonológico del idioma achual,Lima: Instituto Lingüístico de Verano
Friedman, Victor (2001), "Macedonian", in Garry, Jane; Rubino, Carl (eds.),Facts about the World's Languages: An Encyclopedia of the Worlds Major Languages, Past and Present,New York: Holt, pp. 435–439
Göksel, Asli; Kerslake, Celia (2005),Turkish: a comprehensive grammar,Routledge,ISBN978-0415114943
Grønnum, Nina (1998), "Illustrations of the IPA: Danish",Journal of the International Phonetic Association,28(1 & 2): 99–105,doi:10.1017/s0025100300006290,S2CID249412109
Hall, Christopher (2003) [First published 1992],Modern German pronunciation: An introduction for speakers of English(2nd ed.), Manchester: Manchester University Press,ISBN0-7190-6689-1
Hughes, Arthur; Trudgill, Peter (1979),English Accents and Dialects: An Introduction to Social and Regional Varieties of British English,Baltimore: University Park Press
Jassem, Wiktor (2003), "Polish",Journal of the International Phonetic Association,33(1): 103–107,doi:10.1017/S0025100303001191
Kohler, Klaus J. (1999), "German",Handbook of the International Phonetic Association: A guide to the use of the International Phonetic Alphabet,Cambridge: Cambridge University Press, pp. 86–89,ISBN0-521-65236-7
Peters, Jörg (2006), "The dialect of Hasselt",Journal of the International Phonetic Association,36(1): 117–124,doi:10.1017/S0025100306002428
Pop, Sever (1938),Micul Atlas Linguistic Român,Muzeul Limbii Române Cluj
Rogers, Derek; d'Arcangeli, Luciana (2004), "Italian",Journal of the International Phonetic Association,34(1): 117–121,doi:10.1017/S0025100304001628
Schmitt, Holger (2007), "The case for the epsilon symbol (ɛ) in RP DRESS",Journal of the International Phonetic Association,37(3): 321–328,doi:10.1017/S0025100307003131,S2CID143444452
Scobbie, James M; Gordeeva, Olga B.; Matthews, Benjamin (2006),Acquisition of Scottish English Phonology: an overview,Edinburgh: QMU Speech Science Research Centre Working Papers
Stone, Gerald (2002), "Sorbian (Upper and Lower)", in Comrie, Bernard; Corbett, Greville G. (eds.),The Slavonic Languages,London and New York: Routledge, pp. 593–685,ISBN9780415280785
Ternes, Elmer; Vladimirova-Buhtz, Tatjana (1999), "Bulgarian",Handbook of the International Phonetic Association,Cambridge University Press, pp. 55–57,ISBN0-521-63751-1
Tiersma, Peter Meijes (1999) [First published 1985 in Dordrecht by Foris Publications],Frisian Reference Grammar(2nd ed.), Ljouwert: Fryske Akademy,ISBN90-6171-886-4
Traunmüller, Hartmut (1982), "Vokalismus in der westniederösterreichischen Mundart.",Zeitschrift für Dialektologie und Linguistik,2:289–333
Verhoeven, Jo (2007), "The Belgian Limburg dialect of Hamont",Journal of the International Phonetic Association,37(2): 219–225,doi:10.1017/S0025100307002940
Zimmer, Karl; Orgun, Orhan (1999),"Turkish"(PDF),Handbook of the International Phonetic Association: A guide to the use of the International Phonetic Alphabet,Cambridge: Cambridge University Press, pp. 154–158,ISBN0-521-65236-7,archived fromthe original(PDF)on 2018-07-25,retrieved2015-11-21