Blevins, Steve M. (2010). «Robert Koch and the 'golden age' of bacteriology». International Journal of Infectious Diseases. 14 (9): e744–751. PMID20413340. doi:10.1016/j.ijid.2009.12.003.
Blevins, Steve M. (2010). «Robert Koch and the 'golden age' of bacteriology». International Journal of Infectious Diseases. 14 (9): e744–751. PMID20413340. doi:10.1016/j.ijid.2009.12.003.