Betschel, S. D., Borgia, S. M., Barg, N. L., Low, D. E., & De Azavedo, J. C. S. (1998). Reduced Virulence of Group A Streptococcal Tn916 Mutants That Do Not Produce Streptolysin S. American Society for Microbiology.

Betschel, Stephen D., Sergio M. Borgia, Neil L. Barg, Donald E. Low, and Joyce C. S. De Azavedo. Reduced Virulence of Group A Streptococcal Tn916 Mutants That Do Not Produce Streptolysin S. American Society for Microbiology, 1998.

Betschel, Stephen D., et al. Reduced Virulence of Group A Streptococcal Tn916 Mutants That Do Not Produce Streptolysin S. American Society for Microbiology, 1998.