William Blackstone, Robert Kerr (1873). “Commentaries on the Laws of England in Four Books by William Blackstone; Abridged and Adapted to the Present State of the Law by Robert Malcolm Kerr”, p.25
Sir William BLACKSTONE, Samuel Warren (1856). “Blackstone's Commentaries systematically abridged and adapted to the existing state of the law and constitution, with great additions. By Samuel Warren”, p.101