Lapeña, José Florencio F. “Silver and Gold: Looking Back, Looking Ahead”. Philippine Journal of Otolaryngology Head and Neck Surgery 21, no. 1-2 (November 29, 2006): 4. Accessed May 2, 2026. https://pjohns.pso-hns.org/index.php/pjohns/article/view/817.