Martin, Graham R.
Oxford University Press, 2017
eBooks
Walters, Martin
Miles Kelly, 2000
Buku Referensi
Strange, Morten
Periplus Editions, 1998
Buku Referensi
Feduccia, Alan, author
Yale University Press, 1999
Buku Teks
London: Tiger Books International, 1994,
Buku Referensi