Castro, F. R. (1971). Two speeches on the constitution. Central Lawbook Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCastro, Fred Ruiz. Two Speeches on the Constitution. [Quezon City: Central Lawbook Pub, 1971.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCastro, Fred Ruiz. Two Speeches on the Constitution. Central Lawbook Pub, 1971.
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