Simbulan, D. C. (2005). The modern principalia: The historical evolution of the Philippine ruling oligarchy. University of the Philippines Press.
Chicago Style aipamenaSimbulan, Dante C. The Modern Principalia: The Historical Evolution of the Philippine Ruling Oligarchy. Quezon City: University of the Philippines Press, 2005.
MLA aipamenaSimbulan, Dante C. The Modern Principalia: The Historical Evolution of the Philippine Ruling Oligarchy. University of the Philippines Press, 2005.
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