Mark Walters, « The Law behind the Conventions of the Constitution: Reassessing the Prorogation Debate », Journal of Parliamentary and Political Law, vol. 5, , p. 143 (lire en ligne [archive du ], consulté le )
« Black is back and ready for a fight... », Times Online, (lire en ligne [archive])
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Mark Walters, « The Law behind the Conventions of the Constitution: Reassessing the Prorogation Debate », Journal of Parliamentary and Political Law, vol. 5, , p. 143 (lire en ligne [archive du ], consulté le )