APA (7th ed.) Citation

Allen, R. (1957). Structure of Sierra de los Fresnos, Chihuahua, Mexico. [publisher not identified].

Chicago Style (17th ed.) Citation

Allen, Robert. Structure of Sierra De Los Fresnos, Chihuahua, Mexico. [Place of publication not identified]: [publisher not identified], 1957.

MLA (9th ed.) Citation

Allen, Robert. Structure of Sierra De Los Fresnos, Chihuahua, Mexico. [publisher not identified], 1957.

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