APA (7th ed.) Citation

Bell, A. H. (1964). Deep oil possibilities of the Illinois basin. [publisher not identified].

Chicago Style (17th ed.) Citation

Bell, A. H. Deep Oil Possibilities of the Illinois Basin. Urbana: [publisher not identified], 1964.

MLA (9th ed.) Citation

Bell, A. H. Deep Oil Possibilities of the Illinois Basin. [publisher not identified], 1964.

Warning: These citations may not always be 100% accurate.