Ong, E. D. (2002). The story of two Japanese firms who chose to do business in RP. Manila Bulletin.
Chicago Style (17. basım) AtıfOng, Edison Dy. "The Story of Two Japanese Firms Who Chose to Do Business in RP." Manila Bulletin 2002.
MLA (9th ed.) AtıfOng, Edison Dy. "The Story of Two Japanese Firms Who Chose to Do Business in RP." Manila Bulletin, 2002.
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