APA
William David,, . (1967). Keeping the peace : The police order. London: Hutchinson & Co.
Chicago
William David,, . 1967. Keeping the peace : The police order. London: Hutchinson & Co.
Harvard
William David,, . (1967). Keeping the peace : The police order. London: Hutchinson & Co.
MLA
William David,, . Keeping the peace : The police order. London: Hutchinson & Co. 1967.