1. PART I. KEYNOTE ADDRESS: EPIDEMIOLOGY OF AIRBORNE INFECTION
2. Burnett, G.W., and Scherp, H.W.: Oral Microbiology and Infectious Disease, 3rd ed. Baltimore: The Williams and Wilkins Co., 1968, pp 493-585.
3. Bartels, H.A.: Oral Lesions Incited by Microorganisms, in Nolte, W.A. (ed) : Oral Microbiology, St. Louis : The C. V. Mosby Co., 1968, pp 59-155.