Philippine Business Profiles and Perspectives, Inc. (2015). Top 15000 corporations: Engines of growth of the Philippine economy (Business Profiles 2015-2016 edition.). PBPPI.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippine Business Profiles and Perspectives, Inc. Top 15000 Corporations: Engines of Growth of the Philippine Economy. Business Profiles 2015-2016 edition. Pasig City: PBPPI, 2015.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippine Business Profiles and Perspectives, Inc. Top 15000 Corporations: Engines of Growth of the Philippine Economy. Business Profiles 2015-2016 edition. PBPPI, 2015.
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