APA (7th ed.) Citation

McCampbell, W. G. (1940). Geology of the Willow City-Eckert area, Gillespie County, Texas. [publisher not identified].

Chicago Style (17th ed.) Citation

McCampbell, William Gibson. Geology of the Willow City-Eckert Area, Gillespie County, Texas. Austin, Tex.: [publisher not identified], 1940.

MLA (9th ed.) Citation

McCampbell, William Gibson. Geology of the Willow City-Eckert Area, Gillespie County, Texas. [publisher not identified], 1940.

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