1. American Social Health Assocation;A, A.S.H.,1962
2. Batunin, M. P., and Berlin, G. A. (1963). Vestn. Derm. Vener., 37, no. 1, p. 66.
3. Proc. XXIV General Assembly and Technical Meeting of IUVDT;Brandao, F.; da Cruz Sobral, F.; da Fonseca, A.,1965
4. British Cooperative Clinical Group (1960). Brit. J. vener. Dis., 36, 233.
5. Venereal Disease and Young People.;A, B.M.;Ibid; Annual Report of the Department of National Health and Welfare,1965