2012 Philippine statistical yearbook.

Democratic challenges, democratic choices the erosion of political support in advanced industrial democracies von Dalton, Russell J.

Available for University of the Philippines System via Oxford Scholarship Online. Click here to access

Indicators of good governance developing an index of governance quality at the LGU level von Manasan, Rosario G.

Governance matters von Kaufmann, Daniel 1951-

Aggregating governance indicators von Kaufmann, Daniel 1951-

Statistical abstract of the world

World handbook of political and social indicators von Taylor, Charles Lewis