APA (7th ed.) Citation

O'Brien, T. H. (1955). Civil defence. H.M. Stationery Off.

Chicago Style (17th ed.) Citation

O'Brien, Terence H. Civil Defence. London: H.M. Stationery Off, 1955.

MLA (9th ed.) Citation

O'Brien, Terence H. Civil Defence. H.M. Stationery Off, 1955.