1. 1J. J. CONYBEARE(1947 ). Textbook of medicine ; 8th edition . Livingstone. Edinburgh, p.391 .
2. 2C. F. W. ILLINGWORTH(1947 ). A short textbook of surgery , 4th edition . Churchill, London. p.405 .
3. LUDWIG'S ANGINA
4. 4W. BOYD(1953 ). Textbook of pathology , 6th edition . Lea and Febiger, Philadelphia, p.439 .
5. Submandibular Infection by Gas-forming Organisms