APA (7th ed.) Citation

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.) Citation

Pryor, 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.) Citation

Pryor, Wayne Arthur, and Charles Alexander Ross. Geology of the Illinois Parts of the Cairo, La Center, and Thebes Quadrangles. [publisher not identified], 1962.