Thompson, Chantal P.
D.C. heath and Company, 1996
Buku Teks
Laws, Valerie
Buku Teks
Graham, Gaelle, author
Hodder & Stoughton, 1991
Buku Teks
Comeau, Raymond F.
Holt, Rinehart, and Winston, 1986
Buku Teks
Mok, Quirinus Ignatius Maria
Mouton, 1968
Buku Teks