Philippine Business Profiles and Perspectives, Inc. (2015). Top 15000 corporations: Engines of growth of the Philippine economy (Business Profiles 2015-2016 edition.). PBPPI.
Chicago-referens (17:e uppl.)Philippine Business Profiles and Perspectives, Inc. Top 15000 Corporations: Engines of Growth of the Philippine Economy. Business Profiles 2015-2016 edition. Pasig City: PBPPI, 2015.
MLA-referens (9:e uppl.)Philippine 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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