Furnivall, JS
Experiment in independence:the Philippines
Solidaridad publishing house, 1974
 Buku Teks
Santos, Emmanuel T.
The constitution of the Philippines: notes and comments / Emmanuel T. Santos
The Philipine society of Constitutional Law, 1976
 Buku Teks
Majul, Cesar A.
Muslims in the Philippines
The University of The Philippines Press, 1973
 Buku Teks
Majul, Cesar A.
Muslims in the Philippines
University of the Philippines Press, 1999
 Buku Teks
Forbes, Cameron W.
The Philippines islands : with illustration / by W. Cameron Forbes
Houghton Miffiln, 1928
 Buku Klasik