Ladefoged, Peter
Vowels and Consonant : an introduction to the sounds of languages / Peter Ladefoged
Blackwall, 2001
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Huddleston, Rodney
Introduction to the grammar of English
Cambridge University Press, 1984
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Ogden, Richard
An introduction to english phonetics
Edinburgh University Press, 2017
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Barber, Charles
The english language : a historical introduction / Charles Barber
Cambridge University Press, 1993
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Jepson, R. W.
English grammar for today
Longman , 1936
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