Agoncillo, Theodoro, History of the Filipino People, R.P. Garcia Publishing Company, Quezon City, 1990

Bellwood, Peter, Prehistory of the Indo-Malaysian Archipelago, University of Hawaii Press, Honolulu, 1997

Cutler, Thomas J., The Battle of Leyte Gulf, Harper Collins Publishers, Inc., New York, 1994

de la Costa, Horacio S.J., Readings in Philippine History, Bookmark Inc., Metro Manila, 1992

Diamond, Jared, Guns, Germs and Steel, W.W. Norton & Co Inc, New York, 1998

Grun, Bernard, The Timetables of History, Simon & Schuster, New York, 1982

Harper, Peter and Peplow, Evelyn, Philippines Handbook, Moon Publications, Inc., Chico CA, 1991

Levathes, Louise, When China Ruled the Seas, Oxford University Press, New York, 1994

Library of Congress Country Studies, Philippines, 1991

McDougald, Charles C., The Marcos File, San Francisco Publishers, San Francisco, 1987.

Panikkar, K.M., Asia and Western Dominance, George Allen & Unwin Ltd, London, 1959

Peplow, Evelyn, The Philippines, The Guidebook Company Ltd., Hong Kong, 1992

Peters, Jens, Philippines, Lonely Planet Publications Ltd.,Hawthorn AU, 1991

Rempel, William C., Delusions of a Dictator, Little, Brown and Company, Boston, 1993

Renfrew, Colin, Archaeology and Language, Penguin Books, London, 1987

Ruhlen, Merritt, The Origin of Language, John Wiley & Sons, New York, 1994

Schaefer, Albrecht G. et al, Philippines, Nelles Verlag GmbH, Munchen, 1997

Shores, Louis and Halsey, William (eds), Collier's Encyclopedia, P.F. Collier, Inc., New York, 1977

Wetterau, Bruce, Concise Dictionary of World History, Macmillan Publishing Company, New York, 1983

Wolpert, Stanley, A New History of India, Oxford University Press, New York, 1977