Thomas, Ian, author
Brockhamton Press, 1999
Buku Teks
Treben, Maria, author
Ennsthaler Steyr, 2009
Buku Teks
Garland, Sarah, author
Francis Lincoln, 1995
Buku Teks
Tang, Stephen, author
Piatkus, 1995
Buku Referensi
Bone, Kerry, author
Elsevier, 2013
Buku Teks