Pryor, W. A., & Ross, C. A. (1962). Geology of the Illinois parts of the Cairo, La Center, and Thebes quadrangles. [publisher not identified].
Chicago Style (17th ed.) CitationPryor, Wayne Arthur, and Charles Alexander Ross. Geology of the Illinois Parts of the Cairo, La Center, and Thebes Quadrangles. Urbana: [publisher not identified], 1962.
MLA (9th ed.) CitationPryor, Wayne Arthur, and Charles Alexander Ross. Geology of the Illinois Parts of the Cairo, La Center, and Thebes Quadrangles. [publisher not identified], 1962.
Warning: These citations may not always be 100% accurate.