Cullen, Pauline
Cambridge vocabulary for IELTS
Cambridge University Press, 2008
Multimedia
Bauer, Lauria
Vocabulary
London : Routledge, 1998
Buku Teks
Morgan, John, 1944-2004
Vocabulary
Oxford University Press, 1990
Buku Teks SO
Hopkins, Diana
Cambridge grammar for ielts with answers: self-study grammar reference and practice
Cambridge University Press, 2011
Buku Teks SO
French vocabulary
Buku Teks