Jane Hutchison, Andrew Brown
Routledge, 2001.
Buku Teks
Kramer, X.E., author
T.M.C. Asser Press, 2012
eBooks
Evi Nurvidya Arifin, author
[publisher not identified], 2006
Buku Klasik
Appleby, Pauline, author
Glorier International, 2001
Buku Referensi
Rahil Ismail, Brian J. Shaw, Ooi Giok Ling
Ashgate, 2009
Buku Teks