1. Gumma of the penis;Catterall, R.D.; Collins, C.D.; Redmond, A.;British Journal of Venereal Diseases,1957
2. Venereal Diseases;King, A.; Nicol, C.S.,1975
3. Remarks apropos of five cases of syphilis of the testes. Bulletin de la Socidte franfaise de dermatologie;Marill, F.G.; Marill, R.M.; Sayag, J.;et de syphiligraphie,1969
4. A System of;Power, D.A.; Murphy, J.K.;Sjphilis,1914
5. Pathology;Robbins, S.L.,1968