1. Duke-Elder S. System of ophthalmology, vol. 19. London: Kimpton; 1958–1972.
2. Hornblass A. Tumors of the ocular adnexa. In: Hornblass A, editor. Tumors of the ocular adnexa and orbit. St. Louis: Mosby; 1979. p. 1979.
3. Older JJ. Eyelid tumors: clinical diagnosis & surgical treatment. 2nd ed. New York: Thieme; 2003.
4. Shields JA. Atlas of eyelid and conjunctival tumors. 2nd ed. Philadelphia: Lippincott Williams & Wilkins; 1999.