Zhanel, G. G., Karlowsky, J. A., Palatnick, L., Vercaigne, L., Low, D. E., & Hoban, D. J. (1999). Prevalence of Antimicrobial Resistance in Respiratory Tract Isolates of Streptococcus pneumoniae: Results of a Canadian National Surveillance Study. Antimicrob Agents Chemother.

Zhanel, George G., James A. Karlowsky, Lorraine Palatnick, Laverne Vercaigne, Donald E. Low, και Daryl J. Hoban. "Prevalence of Antimicrobial Resistance in Respiratory Tract Isolates of Streptococcus Pneumoniae: Results of a Canadian National Surveillance Study." Antimicrob Agents Chemother 1999.

Zhanel, George G., et al. "Prevalence of Antimicrobial Resistance in Respiratory Tract Isolates of Streptococcus Pneumoniae: Results of a Canadian National Surveillance Study." Antimicrob Agents Chemother 1999.