Halsbury's Laws of England /   84, 84A. 
Lord Mackay 
 - 5th ed. 
 - London:   LexisNexis,   2013.  
 - v. ;  25 cm. 
<br/><br/>Police and Investigatory Powers. 
<br/><br/><label>ISBN: </label>9781405787789 9781405763776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Law--Great Britain
<br/><br/><label>Dewey Class. No.: </label>348.42