APA (7th ed.) Citation

Crocket, G. L. (1970). An historical sketch. [publisher not identified].

Chicago Style (17th ed.) Citation

Crocket, George Louis. An Historical Sketch. [San Augustine, Tex.]: [publisher not identified], 1970.

MLA (9th ed.) Citation

Crocket, George Louis. An Historical Sketch. [publisher not identified], 1970.