Willman, H. B., Payne, J. N., & Voskuil, W. H. (1942). Geology and mineral resources of the Marseilles, Ottawa, and Streator quadrangles. [publisher not identified].
Chicago Style (17th ed.) CitationWillman, H. B., James Norman Payne, and Walter H. Voskuil. Geology and Mineral Resources of the Marseilles, Ottawa, and Streator Quadrangles. Urbana, Ill.: [publisher not identified], 1942.
MLA (9th ed.) CitationWillman, H. B., et al. Geology and Mineral Resources of the Marseilles, Ottawa, and Streator Quadrangles. [publisher not identified], 1942.
Warning: These citations may not always be 100% accurate.