De Castro, R. (1989). Historical Review of the concept, issues and proposals on an independent foreign policy for the Philippines: 1955-1988. Asian Studies.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDe Castro, Rene. "Historical Review of the Concept, Issues and Proposals on an Independent Foreign Policy for the Philippines: 1955-1988." Asian Studies 1989.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDe Castro, Rene. "Historical Review of the Concept, Issues and Proposals on an Independent Foreign Policy for the Philippines: 1955-1988." Asian Studies, 1989.
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