Colmenares, P. C. (1997). Erap opens Worldbex 97: 16 nations in building exhibition. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रColmenares, Pinky Concha. "Erap Opens Worldbex 97: 16 Nations in Building Exhibition." Manila Bulletin 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रColmenares, Pinky Concha. "Erap Opens Worldbex 97: 16 Nations in Building Exhibition." Manila Bulletin, 1997.
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