Velasco, M. M. EDC, PGPC submit bids for geothermal blocks. IN Business. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVelasco, Myrna M. "EDC, PGPC Submit Bids for Geothermal Blocks. IN Business." Manila Bulletin .
एमएलए (9वां संस्करण) प्रशस्ति पत्रVelasco, Myrna M. "EDC, PGPC Submit Bids for Geothermal Blocks. IN Business." Manila Bulletin, .
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