APA
Douglas R., . (1979). An outline of the law relating to harbours in Great Britain managed under statutory powers. London: NPC.
Chicago
Douglas R.P.A, . 1979. An outline of the law relating to harbours in Great Britain managed under statutory powers. London: NPC.
Harvard
Douglas R., . (1979). An outline of the law relating to harbours in Great Britain managed under statutory powers. London: NPC.
MLA
Douglas R.P.A, . An outline of the law relating to harbours in Great Britain managed under statutory powers. London: NPC. 1979.