Philippines. Securities and Exchange Commission. (1987). Top 1000 corporations. Securities and Exchange Commission.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines. Securities and Exchange Commission. Top 1000 Corporations. Mandaluyong, Metro Manila: Securities and Exchange Commission, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines. Securities and Exchange Commission. Top 1000 Corporations. Securities and Exchange Commission, 1987.
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