APA (7th ed.) Citation

Bullard, F. M. (1926). Geology of Marshall County, Oklahoma. [publisher not identified].

Chicago Style (17th ed.) Citation

Bullard, Fred M. Geology of Marshall County, Oklahoma. Norman: [publisher not identified], 1926.

MLA (9th ed.) Citation

Bullard, Fred M. Geology of Marshall County, Oklahoma. [publisher not identified], 1926.

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