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