3.Vowel
... Jones developed the cardinal vowel system to describe vowels in terms of the ... Retrieved from " http://en.wikipedia.org/wiki/Vowel" ...
-- http://schools-wikipedia.org/wp/v/Vowel.htm
8.Vowel - Wikinfo
... vowel, but can form a diphthong with the vowels A, E, or O, and can ... the Wikipedia article, "Vowel" http://en.wikipedia.org/wiki/Vowel December 31, 2003 ...
-- http://www.wikinfo.org/index.php/Vowel