1. Dorland’s illustrated medical dictionary. 29th ed. Philadelphia: WB Saunders; 2000. p. 1573.
2. The differential diagnosis of rhinorrhea;Knight;J Allergy Clin Immunol,1995
3. Vasomotor rhinitis;Kimmelman;Otolaryngol Clin North Amer,1986
4. Fonseca RJ, Walker RV. Oral and maxillofacial trauma. 2nd ed. Philadelphia: WB Saunders; 1997. p. 696.
5. Cerebrospinal fluid;Brandt;J Oral Maxillofac Surg,2002