Andrew Sparrow, Kevin Rawlinson, Martin Farrer, Larry Elliott: As it happened – MPs vote for Brady's Brexit amendment to renegotiate backstop. In: The Guardian. 30. Januar 2019, ISSN0261-3077 (theguardian.com [abgerufen am 12. Oktober 2019]).
Andrew Sparrow, Kevin Rawlinson, Martin Farrer, Larry Elliott: As it happened – MPs vote for Brady's Brexit amendment to renegotiate backstop. In: The Guardian. 30. Januar 2019, ISSN0261-3077 (theguardian.com [abgerufen am 12. Oktober 2019]).