1. Notes on Bacterial Water Analysis;Jordan;Repts. & Papers APHA,1899
2. Some Observations Upon the Bacterial Self Purification of Streams;Jordan;Jour. Exp. Med.,1900
3. Present Status of Handling Water Samples;Caldwell;Amer. Jour. of Public Health,1933
4. The Effect of Storage on the Coliform and Bacterium coli Counts of Water Samples. Storage for six hours at room and refrigerator temperatures;The Public Health Laboratory Service Water Subcommittee of Great Britain;Jour. Hyg.,1953
5. A Delayed Incubation Membrane Filter Test for Coliform Bacteria in Water;Geldreich;Amer. Jour. of Public Health,1955