MLA

of Coordinator of Information. Geographic Division, United States. Office. Finland Railroads / Compiled and Drawn in the Geographic Division, C.O.I. C.O.I.], 1942. https://collections.library.yale.edu/catalog/15471579.

APA, 6th edition

of Coordinator of Information. Geographic Division, U. S. O. (1942). Finland railroads / compiled and drawn in the Geographic Division, C.O.I. [Maps]. C.O.I.], https://collections.library.yale.edu/catalog/15471579.