de Castro, D. J., and C. R. Laganao. “Coexisting Parotid Cholesteatoma and Temporal Bone Carcinoma: A Case Report”. Philippine Journal of Otolaryngology Head and Neck Surgery, Sept. 2025, pp. 4-8, https://pjohns.pso-hns.org/index.php/pjohns/article/view/1231.