APA (7th ed.) Citation

Dill, G. M. (1961). Structure of northern Sierra de Ventana: Municipio de Ojinaga, Chihuahua, Mexico. [publisher not identified].

Chicago Style (17th ed.) Citation

Dill, George Meyer. Structure of Northern Sierra De Ventana: Municipio De Ojinaga, Chihuahua, Mexico. [Place of publication not identified]: [publisher not identified], 1961.

MLA (9th ed.) Citation

Dill, George Meyer. Structure of Northern Sierra De Ventana: Municipio De Ojinaga, Chihuahua, Mexico. [publisher not identified], 1961.