Cunningham, Chris, author
Kangaroo Press, 1996
Buku Teks
Bethencourt, Francisco
Temas E. Debates, 1998
Buku Referensi
Bretschneider, E., 1833-1901, author
K. Paul, Trench, Trubner, 1910
Buku Teks
Barreto, Luis Filipe
Imprensa Nacional, 1988
Buku Referensi
Parry, J.H.
Harper & Row, Publishers, 1961
Buku Teks