MLA

of Strategic Services. Geography Division, United States. Office. Main Transport Facilities in Central and South Africa / Compiled and Drawn in Geography Division. OSS, 1942. https://collections.library.yale.edu/catalog/15532669.

APA, 6th edition

of Strategic Services. Geography Division, U. S. O. (1942). Main transport facilities in central and south Africa / Compiled and drawn in Geography Division. [Maps]. OSS, https://collections.library.yale.edu/catalog/15532669.