MLA

Columbus, and Western New Mexico Townsite Company. Columbus and the Lower Mimbres Valley, New Mexico / Columbus and Western New Mexico Townsite Company. Southwestern Printing Co, 0AD. https://collections.library.yale.edu/catalog/2112438.

APA, 6th edition

C., & Company, W. N. M. T. (0 C.E.). Columbus and the Lower Mimbres Valley, New Mexico / Columbus and Western New Mexico Townsite Company [Pamphlets, Promotional literature]. Southwestern Printing Co. https://collections.library.yale.edu/catalog/2112438.