De Leon, I. C. (1998). RP-Hungary tourism, trade accords signed. Manila Bulletin.
Chicago Style (17. basım) AtıfDe Leon, Isabel C. "RP-Hungary Tourism, Trade Accords Signed." Manila Bulletin 1998.
MLA (9th ed.) AtıfDe Leon, Isabel C. "RP-Hungary Tourism, Trade Accords Signed." Manila Bulletin, 1998.
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