APA (7th ed.) Citation

Keller, G. R. (1973). Crustal structure of the Texas Gulf Coast. [publisher not identified].

Chicago Style (17th ed.) Citation

Keller, George Randy. Crustal Structure of the Texas Gulf Coast. [Place of publication not identified]: [publisher not identified], 1973.

MLA (9th ed.) Citation

Keller, George Randy. Crustal Structure of the Texas Gulf Coast. [publisher not identified], 1973.