1. Fundamentals of Microbiology;Alcamo,1997
2. Standard Methods for the Examination of Water and Wastewater;American Public Health Association (APHA),1998
3. Waterborne Pathogens––Manual of Water Supply Practices;American Water Works Association (AWWA),1999
4. Analytical Services, Inc., 2001. Web page for Giardia and Cryptosporidium Analyses: Available from
5. Manual of Clinical Microbiology;Balows,1991