APA (7th ed.) Citation

Great Britain. War Office. General Staff. Geographical Section & John Bartholomew and Son. (1921). Asia, scale 1: 4,000,000. War Office.

Chicago Style (17th ed.) Citation

Great Britain. War Office. General Staff. Geographical Section and John Bartholomew and Son. Asia, Scale 1: 4,000,000. [London]: War Office, 1921.

MLA (9th ed.) Citation

Great Britain. War Office. General Staff. Geographical Section and John Bartholomew and Son. Asia, Scale 1: 4,000,000. War Office, 1921.