Boyd, Elaine
Objective IELTS.
Cambridge University Press, 2006
 Multimedia
Black, Michael
Objective IELTS intermediate student's book
Cambridge University Press, 2010
 Buku Teks
Black, Michael
Objective IELTS advanced student's book
Cambridge University Press, 2008
 Buku Teks SO
Terry, Morgan
Focus on academic skills for IELTS
Pearson, 2007
 Buku Teks SO
Hopkins, Diane
Cambridge grammar for IELTS.
Cambridge University Press, 2006
 Multimedia