Philippines. Department of Energy. (2010). Directing the Preparations for the Trading of Ancillary Services in the Philippine Wholesale Electricity Spot Market ("WESM"). Philippine Daily Inquirer.
Παραπομπή σε μορφή Chicago (17η εκδ.)Philippines. Department of Energy. "Directing the Preparations for the Trading of Ancillary Services in the Philippine Wholesale Electricity Spot Market ("WESM")." Philippine Daily Inquirer 2010.
Παραπομπή σε μορφή MLA (9th εκδ.)Philippines. Department of Energy. "Directing the Preparations for the Trading of Ancillary Services in the Philippine Wholesale Electricity Spot Market ("WESM")." Philippine Daily Inquirer, 2010.
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