Survey, U. S. G., Voegeli, P. T., & Hershey, L. A. (1965). Geology and ground-water resources of Prowers County, Colorado. Washington : United States Government Printing Office.
Chicago Style (17th ed.) CitationSurvey, United States. Geological, Paul T. Voegeli, and Lloyd A. Hershey. Geology and Ground-water Resources of Prowers County, Colorado. Washington : United States Government Printing Office, 1965.
MLA (9th ed.) CitationSurvey, United States. Geological, et al. Geology and Ground-water Resources of Prowers County, Colorado. Washington : United States Government Printing Office, 1965.
Warning: These citations may not always be 100% accurate.