APA (7th ed.) Citation

Beckman, M. W. (1941). The stratigraphy and age of the Seguin formation of central Texas. [publisher not identified].

Chicago Style (17th ed.) Citation

Beckman, Michael William. The Stratigraphy and Age of the Seguin Formation of Central Texas. [College Station, Texas]: [publisher not identified], 1941.

MLA (9th ed.) Citation

Beckman, Michael William. The Stratigraphy and Age of the Seguin Formation of Central Texas. [publisher not identified], 1941.