1. Groups B, C, and G streptococcal infections in a cancer hospital;Armstrong D.;Ann. N. Y. Acad. Sci.,1970
2. The classification of streptococci;Blake F. G.;J. Med. Res.,1917
3. Clinical significance of Lancefield groups LT streptococci isolated from blood and cerebrospinal fluid;Broome C. V.;J. Infect. Dis.,1976
4. Buchanan R. E. and N. E. Gibbons (ed.). 1974. Bergey's manual of determinative bacteriology 8th ed. The Williams & Wilkins Co. Baltimore.
5. Colman G. and R. E. O. Williams. 1972. Taxonomy of some human viridans streptococci p. 281-299. In L. W. Wannamaker and J. M. Matsen (ed.) Streptococci and streptococcal diseases recognition understanding and management. Academic Press Inc. New York.