Smithsonian Institution. Bureau of American Ethnology & Thomas, C. (1889). Circular, square, and octagonal earthworks of Ohio. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationSmithsonian Institution. Bureau of American Ethnology and Cyrus Thomas. Circular, Square, and Octagonal Earthworks of Ohio. [Place of publication not identified]: U.S. Government Printing Office, 1889.
MLA (9th ed.) CitationSmithsonian Institution. Bureau of American Ethnology and Cyrus Thomas. Circular, Square, and Octagonal Earthworks of Ohio. U.S. Government Printing Office, 1889.
Warning: These citations may not always be 100% accurate.