Office; Bureau of Export Trade Promotions. January - October 2012 Philippine Merchandise Total Trade (PDF). DepartmentofTradeandIndustry: 3. [2013-03-25]
[2021-10-25]. Board of Directors and Executive Officers. [June 15, 2018]. Businessman Roberto V. Ongpin dies at 86. CNN Philippines. 2023-02-05 [2023-02-06]