APA (7th ed.) Citation

Dilnot, G. (1929). Scotland Yard: Its history and organisation : By George Dilnot (Centenary ed., (completely rev.).). Geoffrey Bles.

Chicago Style (17th ed.) Citation

Dilnot, George. Scotland Yard: Its History and Organisation : By George Dilnot. Centenary ed., (completely rev.). London: Geoffrey Bles, 1929.

MLA (9th ed.) Citation

Dilnot, George. Scotland Yard: Its History and Organisation : By George Dilnot. Centenary ed., (completely rev.). Geoffrey Bles, 1929.