Town plan of Ljubljana [cartographic material] : date prior to 1930.
MLA
of Strategic Services. Research, United States. Office, and Analysis Branch. Town Plan of Ljubljana [Cartographic Material] : Date Prior to 1930. R & A, OSS, 1943. https://collections.library.yale.edu/catalog/15498803.
APA, 6th edition
of Strategic Services. Research, U. S. O., & Branch, A. (1943). Town plan of Ljubljana [cartographic material] : date prior to 1930. [Maps]. R & A, OSS, https://collections.library.yale.edu/catalog/15498803.