Cameron, Susan, 1958-
Perfecting your english pronunciation
McGaw-Hill, 2011
 Multimedia
Cameron, Susan, 1958-
Perfecting your english pronunciation
McGraw-Hill, 2011
 Multimedia
MacCarthy, Peter A.
An English pronouncing vocabulary
Heffer, 1950
 Buku Teks
Nilsen, Don L. F.
Pronunciation contrasts in English
Regents Publishing, 1973
 Buku Teks
Jones, Daniel
English pronouncing dictionary
Cambridge University Press, 1992
 Buku Referensi