Graham, Gaelle, author
Hodder & Stoughton, 1991
Buku Teks
Michalak-Gray, Joanna, author
Teach Yourself , 2014
Buku Teks
Coggle, Paul, author
NTC Publishing Group, 1994
Buku Teks
Weston, Marie-Therese
NTC Publishing Group, 1994
Buku Teks
Kurbegov, Eliane
Mc Graw Hill, 2012
Buku Teks