Aguirre, A. (2000). Constitutionalism: Key to political stability. Philippine Star.
Lua i Stíl Chicago (17ú heag.)Aguirre, Alexander. "Constitutionalism: Key to Political Stability." Philippine Star 2000.
Lua MLA (9ú heag.)Aguirre, Alexander. "Constitutionalism: Key to Political Stability." Philippine Star, 2000.
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