MLA

Kibbe, A. F. Kibbe's Geographical and Geological Map of the San Juan Mining Region, Colorado / A.F. Kibbe. Geo. H. Adams & Son, 1881. https://collections.library.yale.edu/catalog/15818414.

APA, 6th edition

Kibbe, A. F. (1881). Kibbe's geographical and geological map of the San Juan Mining Region, Colorado / A.F. Kibbe. [Maps]. Geo. H. Adams & Son, https://collections.library.yale.edu/catalog/15818414.