Sir William Blackstone, John Fletcher Hargrave, George Sweet, Sir Richard Couch, William Newland Welsby (1852). “Commentaries on the Laws of England : in Four Books, with an Analysis of the Work”, p.246
William Blackstone (2016). “The Oxford Edition of Blackstone's: Commentaries on the Laws of England: Book II: Of the Rights of Things”, p.57, Oxford University Press