1. Hemminger, G. L., 1968, Tobacco, in: Familiar Quotations by John Bartlett, 14th Ed. ( E. M. Beck, ed.), Little, Brown, Boston, p. 1037.
2. World Heatlh Organization, 1975, Smoking and its effect on health, WHO Tech. Rep. No. 568, Geneva, p. 8.
3. McCusker, K., 1983, Your patient and nicotine habituation, J. Respir. Dis. 4: 65–69.
4. Iglehart, J. K., 1984, Smoking and public policy, N. Engl. J. Med. 310: 539–544.
5. U.S. Public Health Service, 1979, Smoking and Health: A Report of the Surgeon General, DHEW (PHS) Publ. No. 79.-50066, U.S. Dept. of Health, Education, and Welfare, Public Health Service.