↑ de Ungria, Ricardo M. Enriching Knowledge by Publishing the Regional Languages Asiatic, Unibersidad kan Pilipinas-Mindanao, Hunyo 2009, p. 29-30 ↑ Retired UP professor leads 'Premio' honores Bicol Mail (pighugot 2009-07-18) ↑ Ma. Lilia F. Realubit (1931-2017): Scholar, Writer, ‘Bikolista’ Business Mirror (pighugot 2017-08-26)