International Map Europe 1:1,000,000 : Map No. 2, Combined map of Istambul and Izmir and part of Sinob and Konia sheets.
MLA
Survey, Great Britain. Ordnance. International Map Europe 1:1,000,000 : Map No. 2, Combined Map of Istambul and Izmir and Part of Sinob and Konia Sheets. Ordnance Survey, 192AD. https://collections.library.yale.edu/catalog/15238246.
APA, 6th edition
Survey, G. B. O. (192 C.E.). International Map Europe 1:1,000,000 : Map No. 2, Combined map of Istambul and Izmir and part of Sinob and Konia sheets. [Maps]. Ordnance Survey, https://collections.library.yale.edu/catalog/15238246.
