Massow, Fr. von, author
Macmillan, 1997
Buku Teks
Buckton, Graham, author
Harwood Academic, 1995
Buku Teks
Hodgson, Barbara B., author
Saunders, 2008
Buku Referensi
Hodgson, Barbara B., author
Saunders, 2008
Buku Teks
Hodgson, Barbara B., author
Saunders, 2008
Buku Teks