Great Britain. War Office. General Staff. Geographical Section & Great Britain. Ordnance Survey. (1909). Northern Nigeria. Geographical Section, General Staff.
Chicago Style (17th ed.) CitationGreat Britain. War Office. General Staff. Geographical Section and Great Britain. Ordnance Survey. Northern Nigeria. [London?]: Geographical Section, General Staff, 1909.
MLA (8th ed.) CitationGreat Britain. War Office. General Staff. Geographical Section and Great Britain. Ordnance Survey. Northern Nigeria. Geographical Section, General Staff, 1909.
Warning: These citations may not always be 100% accurate.