MLA

Forces, Great Britain. Army. Middle East. U.S.S.R. and Adjacent Countries / Compiled and ... Revised ... by 512 Fd. Survey Coy., R.E. ... Army Map Service, 1943. https://collections.library.yale.edu/catalog/15474793.

APA, 6th edition

Forces, G. B. A. M. E. (1943). U.S.S.R. and adjacent countries / Compiled and ... revised ... by 512 Fd. survey coy., R.E. ... [Maps]. Army Map Service, https://collections.library.yale.edu/catalog/15474793.