Laxamana, Joman Q., Rene Louie C. Gutierrez, and Roberto C. Claridad. “Giant Ossifying Fibroma of the Frontoethmoid Sinus: A Silent Peril”. Philippine Journal of Otolaryngology Head and Neck Surgery 28, no. 2 (December 1, 2013): 22–25. Accessed May 12, 2024. https://pjohns.pso-hns.org/index.php/pjohns/article/view/479.