References
- Ford, T. D., and Cullingford, H. C. D. 1976. The science of speleology. New York: Academic Press.
- Hill, C. A. 1976. Cave minerals. Austin: The Speleo Press.
- Mohr, C. E., and Poulson, T. L. 1966. The life of the cave. New York: McGraw-Hill Book Co.
- Moore, G. W., and Sullivan, G. N. 1978. Speleology: The study of caves. Teaneck, New Jersey: Zephyrus Press.
- Powell, R. L. 1961. Caves of Indiana. Indiana Geological Survey Circular 8. Bloomington, Indiana.
- Thornbury, W. D. 1954. Revised 1969. Karst topography. In Principles of geomorphology. New York: J. Wiley & Sons, Inc.
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