Ong, E. D. (2002). The story of two Japanese firms who chose to do business in RP. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOng, Edison Dy. "The Story of Two Japanese Firms Who Chose to Do Business in RP." Manila Bulletin 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOng, Edison Dy. "The Story of Two Japanese Firms Who Chose to Do Business in RP." Manila Bulletin, 2002.
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