Isip, R. (1997). 32 countries to take part in Clark balloon show. Manila Chronicle.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIsip, Rendy. "32 Countries to Take Part in Clark Balloon Show." Manila Chronicle 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIsip, Rendy. "32 Countries to Take Part in Clark Balloon Show." Manila Chronicle, 1997.
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