Jones, Daniel
Cambridge english pronouncing dictionary
Cambridge University Press, 2003
 Buku Teks
Downes, Colm
Cambridge english for job hunting
Cambridge university press, 2009
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Ibbotson, Mark
Cambridge english for engineering
Cambridge university press, 2010
 Buku Teks
Swan, Michael
The Cambridge English course
Cambridge University Press, 1987
 Buku Teks
The Cambridge history of English literature
edited by A.W. Ward and A.R. Waller
Macmillan, 1939
 Buku Teks