1. National Committee for Clinical Laboratory Standards (NCCLS). Methods for dilution antimicrobial susceptibility tests for bacteria that grow aerobically. 5th ed. NCCLS document M7-A5. Wayne, PA: NCCLS, 2000.
2. National Committee for Clinical Laboratory Standards (NCCLS). Performance standards for antimicrobial disk susceptibility tests. 7th ed. NCCLS document M2-M7. Wayne, PA: NCCLS, 2000.
3. National Committee for Clinical Laboratory Standards (NCCLS). Performance standards for antimicrobial susceptibility testing: 11th informational supplement. NCCLS document M100-S11. Wayne, PA: NCCLS, 2001.
4. National Committee for Clinical Laboratory Standards (NCCLS). Development of in vitro susceptibility testing criteria and quality control parameters; approved guideline. 2d ed. NCCLS document M23-A2. Wayne, PA: NCCLS, 2001.