MLA

Company, H. M. Gousha. Conoco Official Road Map, New Mexico. H.M. Gousha, 0AD. https://collections.library.yale.edu/catalog/15818582.

APA, 6th edition

Company, H. M. G. (0 C.E.). Conoco official road map, New Mexico. [Road maps]. H.M. Gousha, https://collections.library.yale.edu/catalog/15818582.