Map of Arizona Territory / prepared by authority of Bvt. Major General O.B. Willcox commanding department, under the direction of 1st. Lieut. Fred. A. Smith ; compiled and drawn by Paul Riecker.
MLA
Riecker, Paul. Map of Arizona Territory / Prepared by Authority of Bvt. Major General O.B. Willcox Commanding Department, under the Direction of 1st. Lieut. Fred. A. Smith ; Compiled and Drawn by Paul Riecker. U.S. Engineer Office?], 1879. https://collections.library.yale.edu/catalog/15818590.
APA, 6th edition
Riecker, P. (1879). Map of Arizona Territory / prepared by authority of Bvt. Major General O.B. Willcox commanding department, under the direction of 1st. Lieut. Fred. A. Smith ; compiled and drawn by Paul Riecker. [Maps]. U.S. Engineer Office?], https://collections.library.yale.edu/catalog/15818590.
