APA (7th ed.) Citation

Dufty, A. R. (1968). European armour in the Tower of London. HMSO.

Chicago Style (17th ed.) Citation

Dufty, Arthur Richard. European Armour in the Tower of London. London: HMSO, 1968.

MLA (9th ed.) Citation

Dufty, Arthur Richard. European Armour in the Tower of London. HMSO, 1968.

Warning: These citations may not always be 100% accurate.