APA (7th ed.) Citation

Collinson, C. W., & Scott, A. J. (1958). Age of the Springville shale (Mississippian) of Southern Illinois. [publisher not identified].

Chicago Style (17th ed.) Citation

Collinson, Charles William, and Alan Johnson Scott. Age of the Springville Shale (Mississippian) of Southern Illinois. Urbana: [publisher not identified], 1958.

MLA (9th ed.) Citation

Collinson, Charles William, and Alan Johnson Scott. Age of the Springville Shale (Mississippian) of Southern Illinois. [publisher not identified], 1958.