Cameron, Susan, 1958-
Perfecting your english pronunciation
McGaw-Hill, 2011
 Multimedia
Cameron, Susan, 1958-
Perfecting your english pronunciation
McGraw-Hill, 2011
 Multimedia
Cameron, Susan, 1958-
Perfecting your english pronunciation
McGraw-Hill, 2012
 Buku Teks SO
Nilsen, Don L. F.
Pronunciation contrasts in English
Regents Publishing, 1973
 Buku Teks SO
Cox, Felicity
Australian English pronunciation and transcription
Cambridge University Press, 2011
 Buku Teks SO