1. Hot springs of the Yellowstone National Park;Allen;Carnegie Inst. Wash. Publ. No. 466,1935
2. Standard Methods for the Examination of Water and Wastewater;APHA (American Public Health Association),1971
3. Samping and preservation techniques for waters in geysers and hot springs, with a section on gas collection by A.H. Truesdell;Ball,1976
4. Thermophilic Microorganisms and Life at High Temperatures;Brock,1978
5. Techniques of Water Resources Investigations of the United States Geological Survey;Brown,1970