Blumentritt, F. The Philippines: A summary account of their ethnographical, historical and political conditions. Photoduplication Service, Library of Congress.
Cita Chicago (17th ed.)Blumentritt, Ferdinand. The Philippines: A Summary Account of Their Ethnographical, Historical and Political Conditions. Washington: Photoduplication Service, Library of Congress.
Cita MLA (9th ed.)Blumentritt, Ferdinand. The Philippines: A Summary Account of Their Ethnographical, Historical and Political Conditions. Photoduplication Service, Library of Congress.
Atenció: Aquestes cites poden no estar 100% correctes.