Formosa city plans 1: 6,000 : Toen / prepared under the direction of the Chief of Engineers by the Army Map Service (AM), U.S. Army.
MLA
Service, United States. Army Map. Formosa City Plans 1: 6,000 : Toen / Prepared under the Direction of the Chief of Engineers by the Army Map Service (AM), U.S. Army. Army Map Service, 1945. https://collections.library.yale.edu/catalog/15511687.
APA, 6th edition
Service, U. S. A. M. (1945). Formosa city plans 1: 6,000 : Toen / prepared under the direction of the Chief of Engineers by the Army Map Service (AM), U.S. Army. [Topographic maps]. Army Map Service, https://collections.library.yale.edu/catalog/15511687.