APA (7th ed.) Citation

Robinson, G. M., & Peterson, D. E. (1962). Notes on earth fissures in Southern Arizona. [publisher not identified].

Chicago Style (17th ed.) Citation

Robinson, G. M., and D. E. Peterson. Notes on Earth Fissures in Southern Arizona. Washington: [publisher not identified], 1962.

MLA (9th ed.) Citation

Robinson, G. M., and D. E. Peterson. Notes on Earth Fissures in Southern Arizona. [publisher not identified], 1962.