International Phonetics Association.
Handbook of the International Phonetics Association: A Guide to the Use of the International Phonetic Alphabet
(англ.)
. — Cambridge, U.K.; New York, NY:
Cambridge University Press
, 1999. —
ISBN 0-521-63751-1
.
Minglang Zhou.
Multilingualism in China: The Politics of Writing Reforms for Minority Languages, 1949—2002
(англ.)
. — Berlin: Walter de Gruyter, 2003. — P. 219, 245. — 458 p. —
ISBN 978-3-110-17896-8
.
John Laver.
Principles of phonetics. (Cambridge textbooks in linguistics.)
(англ.)
. — Cambridge: Cambridge University Press, 1994. — P. 559. — 707 p. —
ISBN 978-0-521-45655-5
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