Swanson, R. W. (1981). Geologic names of the United States through 1975: A computer list of geologic names in use in the United States and the major elements necessary for their definition.
Chicago Style (17th ed.) CitationSwanson, Roger Warren. Geologic Names of the United States Through 1975: A Computer List of Geologic Names in Use in the United States and the Major Elements Necessary for Their Definition. 1981.
MLA (9th ed.) CitationSwanson, Roger Warren. Geologic Names of the United States Through 1975: A Computer List of Geologic Names in Use in the United States and the Major Elements Necessary for Their Definition. 1981.
Warning: These citations may not always be 100% accurate.