Thompson, Kenneth
Routledge, 1996
Buku Teks
compiled and edited by Justin Wintle
Free Press, 1989
Buku Referensi
Oxford University
London, Oxford University Press
Buku Referensi
Stevenson, Burton
New York, Harper & Brothers
Buku Referensi
José Rizal National Centennial Commission,, 1962.
Buku Teks