Anderson, R. C., & Block, D. A. (1962). Sand and gravel resources of McHenry County, Illinois. [publisher not identified].
Chicago Style (17th ed.) CitationAnderson, Richard C., and Douglas A. Block. Sand and Gravel Resources of McHenry County, Illinois. Urbana: [publisher not identified], 1962.
MLA (9th ed.) CitationAnderson, Richard C., and Douglas A. Block. Sand and Gravel Resources of McHenry County, Illinois. [publisher not identified], 1962.
Warning: These citations may not always be 100% accurate.